John McCain (Presumptive Nominee)

The Arizona senator and former prisoner of war has outlasted his competitors and is preparing to take on the Democratic nominee.
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Mike Huckabee (WITHDREW)

The former Arkansas governor ended his bid March 4 after McCain gained steam in Texas, Ohio, Vermont and Rhode Island.
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Mitt Romney (Withdrew)

The former Massachusetts governor dropped out after McCain's string of decisive Super Tuesday victories.
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Rudy Giuliani (Withdrew)

The former New York mayor, who gained national fame after the 9/11 attacks, dropped out Jan. 30 after a disappointing loss in Florida.
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Ron Paul

Nine-term Texas GOP Congressman Ron Paul is trying again, two decades after his first presidential run.
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Fred Thompson (Withdrew)

Actor and former Tennessee Sen. Fred Thompson dropped out of the race Jan. 22 after a poor showing in early primaries and caucuses.
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With a win in Montana and growing support among superdelegates, Barack Obama proclaimed victory June 3 in the race for the Democratic nomination.
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Hillary Clinton (Suspended Campaign)

The former first lady suspended her historic campaign June 7, endorsing Obama.
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John Edwards (Withdrew)

The 2004 vice presidential nominee dropped out Jan. 30, pledging to continue his fight against poverty.
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Bill Richardson - (Withdrew)

New Mexico Gov. Bill Richardson quit the race Jan. 10 after finishing fourth in both the Iowa caucuses and New Hampshire primary.
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Joe Biden - (Withdrew)

Joe Biden, known for his decades of Senate experience, dropped out of the race Jan. 3.
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Chris Dodd - (Withdrew)

Peace Corps veteran Chris Dodd dropped out of the race Jan 3 after the Iowa caucuses.
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