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[Michele Bachmann DROPPED OUT] A bonanza for Tea Partiers and social conservatives. She's voted twice against raising the debt ceiling and vocally opposes abortion and same-sex marriage — stark contrasts she'd emphasize against Obama. [Newt Gingrich] Look for feistiness. His mix of pugnacity, inside-Washington experience and zest for big-policy talk would lay a path for a scrappy campaign and epic debates. [Ron Paul] It'd be the sharpest possible contrast over the federal government's proper size and role. Paul (nicknamed "Dr. No") boasts of never voting for any bill not explicitly authorized by the U.S. Constitution. He also stridently opposes abortion and favors very limited use of U.S. military force, often breaking with other Republicans, such as by voting against the Iraq War. [Rick Perry DROPPED OUT] Sharp contrast. His stands on social issues, including opposition to abortion and same-sex marriage, as well as his fondness for blunt speech — in 2009 he suggested Texas might secede — mean voters could expect a scrap. Perry also has contrasted his military service with Obama's lack of it. [Mitt Romney] "Romneycare vs. Obamacare." Romney's signature achievement as governor was a state health care law similar to the federal version the Supreme Court will weigh during the presidential campaign. GOP critics say Romney can't confront Obama on the issue. Romney says the Massachusetts law, including its "individual mandate" to buy insurance, is the right path for any state that chooses but one wrong for Washington to impose nationally. [Rick Santorum DROPPED OUT] Santorum remains popular with many social conservatives influential in the GOP primary process. That base, plus his confrontational style, would turn a race with Obama into a battle on moral ground. [0] 
In a race against Obama
2012 Republican presidential candidate bios - Omaha.com interactive documents
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