After playing kingmaker in the 2010 election cycle, the tea party movement is having a less prominent role in 2012. But its support or opposition could swing some key races and even determine whether Republicans win control of the Senate. Here are six US Senate contests where the tea party could make a difference.
Sen. Claire McCaskill already was going to face a tough 2012 reelection in Missouri. But news about unpaid taxes on – and questionable use of – her plane are weighing on the Democrat's chances.