1. Diane Feinstein
   Sarah Palin
2. Hillary Clinton
   Barbara Mikulski

When Democrat Diane Feistein was elected to the U.S. Senate in 1992, she became one of the first two female politicians from California to serve in the Senate. The Stanford grad also served as the Mayor of San Francisco from 1978 to 1988.

1. Mitt Romney
   Paul Ryan
2. John Kerry
   Bill Clinton

Democrat John Kerry served as a U.S. Senator from 1985 to 2013. He ran for president in 2004, losing to Republican George W. Bush. After leaving the Senate, the long-time politician from Massachusetts went on to become Secretary of State.

1. Elizabeth Warren
   Sarah Palin
2. Hillary Clinton
   Jill Stein

Hillary Clinton was the First Lady of the U.S. alongside her husband, Bill Clinton, from 1993 to 2001. She went on to serve as a Senator, then Secretary of State. In 2016, she narrowly missed out on becoming the first female president after losing to Donald Trump in a tight race.

1. Mike Pence
   Joe Biden
2. Barack Obama
   Donald Trump

Donald Trump was a reality TV star and real estate mogul when he became the 45th President of the U.S. in 2017. He started planning a run for the nation's top office as early as 1987, and briefly participated in the 2000 election before dropping out.

1. Bernie Sanders
   Michael Bloomberg
2. Paul Ryan
   Bill Clinton

Bernie Sanders was elected as the mayor of Burlington, Vermont, in 1981. He moved to the U.S. House of Representatives in 1990, then the Senate in 2006. He nearly won the Democratic nomination for President in 2016 before losing the nod to Hillary Clinton.

1. Jill Stein
   Hillary Clinton
2. Nancy Pelosi
   Barbara Boxer

Nancy Pelosi joined the House of Representatives in the late '80s. In 2001, she became the first female House Minority Whip, and in 2017, she became the first female Speaker of the House.

1. Ted Cruz
   John McCain
2. Barack Obama
   Bill Clinton

Ted Cruz was one of several Republicans who fought to earn the party's nomination for President in 2016. The Senator from Texas also happens to be the first Hispanic-American from Texas to be elected to the U.S. Senate.

1. John Kerry
   Michael Bloomberg
2. Al Gore
   Marco Rubio

Marco Rubio was first elected to the House of Representatives in 2000. The Miami Republican became House Majority Leader in 2002, then won a seat in the Senate in 2010.

1. John McCain
   Michael Bloomberg
2. Jeb Bush
   Rand Paul

The son of U.S. representative Ron Paul, Rand Paul was elected to represent Kentucky in the U.S. Senate in 2011. He briefly ran for President in 2016, but dropped out after a poor showing in the polls.

1. Ted Cruz
   Rand Paul
2. Michael McCaul
   Marco Rubio

Texas prosecutor Michael McCaul was elected to the House of Representatives in 2004. His wife's family fortune consistently ranks him among the richest members of Congress.

1. Barack Obama
   Gary Johnson
2. Mike Pence
   Donald Trump

Gary Johnson founded a construction company before he became the Governor of New Mexico in 1995. He ran for president as part of the Libertarian Party in both 2012 and 2016.

1. Ben Carson
   Bill Clinton
2. John Kerry
   Al Gore

Ben Carson was a renowned neurosurgeon from 1984 until his retirement in 2013. He ran for president as part of the Republican Party in 2016, then became Secretary of Housing and Urban Development under Donald Trump.

1. Diane Feinstein
   Hillary Clinton
2. Sarah Palin
   Barbara Mikulski

Sarah Palin served as Governor of Alaska from 2006 to 2009. In 2008, she was selected as a surprise pick for VP to run with presidential candidate John McCain.

1. Diane Feinstein
   Jill Stein
2. Elizabeth Warren
   Hillary Clinton

Harvard-educated doctor Jill Stein ran for Governor of Massachusetts in 2002 and 2010. She later ran for president under the Green Party ticket, but failed to secure a large number of votes.

1. Donald Trump
   Barack Obama
2. Michael Bloomberg
   Vernon Buchanan

Republican Vernon Buchanan has served in the House since 2007. The Florida businessman poured more than $5 million of his own money into his campaign.

1. Bill Clinton
   John Kerry
2. Mike Huckabee
   Michael Bloomberg

Mike Huckabee was Governor of Arkansas from 1996 to 2007, after previously serving as Lieutenant Governor for four years. He also ran for president in 2008 and 2016, but failed to win the Republican nomination either time.

1. John McCain
   Chris Christie
2. Bernie Sanders
   Ted Cruz

New Jersey Governor Chris Christie was elected to the first of two consecutive terms in 2009. He was considered as a potential VP pick for Donald Trump, but ultimately lost out to Mike Pence. He has consistently had one of the lowest approval ratings of any U.S. Governor.

1. Rick Scott
   Joe Biden
2. Marco Rubio
   Ross Perot

Republican Rick Scott served as Governor of Florida from 2011 to 2014, when he was elected to his second term. Before entering politics, he served in the Navy and made millions after starting a healthcare company.

1. Bill Clinton
   Martin O'Malley
2. Barack Obama
   Al Gore

Martin O'Malley was the Mayor of Baltimore from 1999 to 2007, before becoming Governor of Maryland in 2007. In 2016, he briefly ran for president. Outside of politics, he's known for fronting an Irish band called O'Malley's March.

1. Michael Bloomberg
   Donald Trump
2. Jeb Bush
   John Kerry

The son of one president and brother of another, Jeb Bush has some strong political ties. He served as Governor of Florida from 1999 to 2007, but failed in an attempt at a run for president in 2016.

1. John McCain
   Michael Bloomberg
2. Barack Obama
   Rock Santorum

Rick Santorum served as a Republican Senator from Pennsylvania from 1995 to 2007. In 2012, he was the Republican candidate for Vice-President under Mitt Romney, who lost the Presidential Election to Barrack Obama.

1. Paul Ryan
   Al Gore
2. Bill Clinton
   Bernie Sanders

Bill Clinton was Governor of Arkansas throughout the '80s, then served as the 42nd U.S. President from 1993 to 2001. Though he was impeached by the House in 1998, he wasn't removed from office.

1. Mike Huckabee
   John McCain
2. Tim Kaine
   Bill Clinton

Tim Kaine was Governor of Virginia from 2006 to 2010. In 2016, he was selected to serve as the Democratic Vice-Presidential candidate under Hillary Clinton, but the pair lost to Donald Trump.

1. Martin O'Malley
   Mike Pence
2. Jeb Bush
   Donald Trump

Mike Pence serve in the House from 2001 to 2013, and was Governor of Indiana from 2013 to 2017. In 2017, he became the 48th Vice-President of the U.S. when Donald Trump was elected President.

1. Mitt Romney
   John Kerry
2. Michael Bloomberg
   Bernie Sanders

Mitt Romney served as Governor of Massachusetts from 2003 to 2007. He was the Republican party nominee for President in 2012, but lost to incumbent Barrack Obama.

1. Paul Ryan
   John McCain
2. Al Gore
   Michael Bloomberg

Paul Ryan was elected to Congress in 1999, and became Speaker of the House in 2015. He was the Republican party nominee for Vice President in 2012 under Mitt Romney, but the pair lost to Barrack Obama.

1. Mike Pence
   Michael Bloomberg
2. Jeb Bush
   Joe Biden

Joe Biden was a Senator from Delaware from 1973 to 2009. From 2009 to 2017, he served as the Vice President of the U.S. under Barrack Obama. He declined to run for president in 2016 after his son died of cancer.

1. John McCain
   Donald Trump
2. Barack Obama
   John Kerry

Barrack Obama served as a Senator for Illinois from 2005 to 2008. In 2009, he became the first African-American president in history.

1. Al Gore
   John McCain
2. Bernie Sanders
   Mitch McConnell

John McCain was first elected to the Senate in 1987. The Arizona Republican also served as the 2008 Republican candidate for President. He lost to Barrack Obama.

1. Mitch McConnell
   John Kerry
2. Bill Clinton
   Al Gore

Al Gore served as a Senator representing Tennessee from 1985 to 1993. He was the Vice-President of the U.S. under Bill Clinton from 1993 to 2001, but lost out during the 2000 Presidential election to George Bush.

1. John Edwards
   Barack Obama
2. Michael Bloomberg
   Bernie Sanders

North Carolina Senator John Edwards served in Congress from 1999 to 2005. He was the Democratic nominee for Vice President in 2004, and ran a failed presidential campaign in 2008.

1. Bob Dole
   Donald Trump
2. Michael Bloomberg
   Bill Clinton

Republican Bob Dole from Kansas served in the House from 1963 to 1969, then in the Senate from 1969 to 1996. He ran for president in 1996, but lost to Bill Clinton.

1. John Edwards
   Jerry Brown
2. Mitt Romney
   Rudy Giuliani

Jerry Brown served as both the 34th and 39th Governor of California. The Democrat was previously the mayor of the city of Oakland from 1975 to 1983.

1. Jeb Bush
   Donald Trump
2. Bernie Sanders
   Andrew Cuomo

Andrew Cuomo was the elected as the 56th Governor of New York in 2011. His father, Mario Cuomo, held the office from 1983 to 1994.

1. John Kerry
   Michael Bloomberg
2. Orrin Hatch
   Barack Obama

As of 2017, Republican Orrin Hatch is one of the longest-serving Republican Senators in history. The Utah resident was first elected to the position in 1977.

1. John McCain
   Mitch McConnell
2. Mike Pence
   Bernie Sanders

Mitch McConnell was first elected to serve as a Senator representing Kentucky in 1985. In 2015, he was named Senate Majority Leader.

1. Barbara Mikulski
   Hillary Clinton
2. Elizabeth Warren
   Barbara Boxer

Democrat Elizabeth Warren had a long and celebrated career in law before she was elected to the Senate in 2013. She was considered a potential presidential candidate in 2013, but ultimately ended up endorsing Hillary Clinton.

1. Joe Biden
   Ross Perot
2. Paul Ryan
   Michael Bloomberg

With a net worth in the billions, Ross Perot has ranked among the richest politicians for decades. He ran for president as an Independent in 1992, then again under the Reform party in 1996.

1. Al Franken
   Bill Clinton
2. Donald Trump
   Rand Paul

Al Franken starred on "SNL" in the '70s and '80s, then served as a Senator from 2009 to 2018. He resigned from office in January 2018 after accusations of sexual misconduct came to light.

1. Al Gore
   Michael Bloomberg
2. Barack Obama
   Ted Kennedy

Ted Kennedy spent more than 40 years representing Massachusetts in the Senate beginning in the early '60s. He was the youngest brother of John F. and Robert Kennedy, and the father of Patrick Kennedy, who was elected to the House in 1995.

1. Mitt Romney
   Kevin McCarthy
2. John Kerry
   Bernie Sanders

Republican Kevin McCarthy was elected to the House in 2007. The California Congressman became House Majority Leader in 2014.

1. Ted Kennedy
   Steve Scalise
2. Joe Biden
   Michael Bloomberg

Steve Scalise was elected to represent Louisiana in the House in 2008, and became Majority Whip in 2014. Before that, he served in the Louisiana State Senate.

1. Rudy Giuliani
   Donald Trump
2. John Dingell
   Mike Pence

Michigan Democrat and WWII vet John Dingell served in the House of Representatives from 1955 to 2015. In 2015, he declined to seek reelection, so his wife ran instead -- and won.

1. Sarah Palin
   Hillary Clinton
2. Nancy Pelosi
   Barbara Mikulski

Barbara Mikulsi, a Democrat from Maryland, ranks among the longest-serving female members in the history of Congress. She served in the House from 1977 to 1987, then spent 30 years in the Senate before retiring.

1. John Conyers
   Bernie Sanders
2. Marco Rubio
   Bill Clinton

Korean War veteran John Conyers was elected to represent Michigan in the House in 1965, and served all the way through 2017. During that time, he co-founded the Congressional Black Caucus.

1. Nancy Pelosi
   Barbara Boxer
2. Sarah Palin
   Jill Stein

A Democrat from California, Barbara Boxer was elected to the House in 1983, where she served until 1993. From 1993 to 2017, she represented California in the U.S. Senate.

1. Donald Trump
   Barack Obama
2. Joe Biden
   Rudy Giuliani

Republican Rudy Giuliani was Mayor of New York from 1994 to 2001. He was preparing to run for re-election when on September 11, 2001, the city experienced an unprecedented terrorist attack. Giuliani became a familiar figure as he helped New York cope with the tragedy in the days and weeks that followed.

1. Mitch McConnell
   John Kerry
2. Bill de Blasio
   Paul Ryan

Bill de Blasio was an NYC Council Member from 2002 to 2009. In 2014, he replaced Michael Bloomberg as Mayor of New York City.

1. John McCain
   Eric Garcetti
2. Mike Pence
   Mitch McConnell

Democrat Eric Garcetti became the 42nd Mayor of Los Angeles, California, in 2013. He previously served on the L.A. City Council from 2006 to 2012.

1. Michael Bloomberg
   Jeb Bush
2. Barack Obama
   Mitt Romney

With a net worth of $50 billion or so, Michael Bloomberg ranks among the richest politicians in American history. He served three terms as Mayor of New York City from 2002 to 2013.