scottwalker-012715.jpg Wisconsin Gov. Scott Walker became the latest potential Republican presidential candidate to take a step toward a run at the White House on Tuesday.

MarcoRubio-012415.jpg While an official announcement is not expected for several weeks, Sen. Marco Rubio, R-Fla., has reportedly begun taking concrete steps toward launching a campaign for president in 2016.

clintonpodium-012215.jpg While a lot can change before Election Day 2016, the results of a new Washington Post/ABC News poll show Hillary Clinton with double-digit leads over several potential Republican challengers.

Romney2-030712_20Jan15.jpg Mitt Romney remains popular among Republicans, but the results of a new NBC News/Wall Street Journal poll suggest that the former GOP presidential nominee's reputation has taken a hit since he began flirting with another run for the White House.

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