Republican presidential candidate Ron Paul has yet to win a primary, but his supporters remain enthusiastic. Robert Siegel speaks with Ron Paul supporters Christa Leonard in St. Paul, Minn., and Ken Stanton in Fort Collins, Colo., following the caucuses in those states about what's keeping them committed.
The remaining GOP presidential candidates, Mitt Romney, Rick Santorum, New Gingrich and Ron Paul, are all fighting to sell a slightly different brand of conservatism. Conservatism has undergone some big changes and its definition in 2012 continues to morph.
President Barack Obama's campaign has urged top donors to support a super PAC run by former Obama aides. The president previously called the fundraising groups a "threat to democracy." The Center for Responsive Politics' Sheila Krumholz discusses the shift and NPR's Ken Rudin reviews the week in politics.
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