Florida Gov. Charlie Crist, a Republican candidate for the US Senate, is on the defensive after the conservative Club for Growth released an ad Thursday that shows him lauding Obama's stimulus package.
But will Tea Party protest energy help or hobble the Republican Party? They're challenging some GOP candidates and could split the vote in those races.
Even before Monday's speech, conservatives had started to dial back the rhetoric. White House has suggested Republicans overplayed their hand.
The five-term senator from Pennsylvania faces dipping polls and now, a Democratic primary contender in Rep. Joe Sestak.
Tuesday's switch by the independent-minded Pennsylvanian also helps Democrats to solidify power in the Senate.
This week’s Senate vote on the economic stimulus package could set the pattern in Congress.
Congress to begin work on a bill the next president would be willing to sign.