The new Republican-controlled House of Representatives has created a dramatic shift in power, mood and momentum in the new 112th Congress. The dynamics are somewhat different in the Senate, however. Republicans picked up several seats there but not enough to achieve a majority. In the Senate, 60 votes are necessary to prevent a filibuster and allow bills to move to a vote on the floor. Therefore, before any bill can move through the Senate, the Democratic majority will need to have a good number of Republicans supporting the measure, as well.