Top ten Senate races to watch in 2012

  • Clockwise, from top left: Scott Brown, Elizabeth Warren, Tim Kaine, George Allen

    As the Republican presidential nominating contest appears to start winding down, Senate races across the country are just starting to heat up. And there's a lot at stake for both parties. Democrats are attempting to hold on to a slim 53-47 majority in the chamber (including Independents), while Republicans are seeking to seize on what looks like a pretty sizable advantage. Come November, Democrats will be defending 23 Senate seats, including six open seats; Republicans will only have to defend ten. Even so, right now it's impossible to tell which way the wind will blow.

    In the following slides, CBS News presents -- in no particular order -- the top ten Senate races to watch going into the 2012 elections.

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