Democratic presidential candidates Bernie Sanders, Hillary Clinton and Martin O'Malley stand on the stage prior to Saturday's Democratic primary presidential debate in Des Moines, Iowa.
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Former President George H.W. Bush pumps his fist next to his son, Jeb, during a fundraiser in Tampa, Fla., in 1994. Jeb Bush was running for governor. He lost that year, but won four years later.
Rep. Paul Ryan, R- Wis., at a news conference following a meeting of House Republicans on Tuesday night. Ryan says he will run for House speaker if the disparate GOP factions can get behind him.