With the Obama administration moving the country to the left and making the federal government bigger, many Democrats will be vulnerable in the 2010 elections.
Listed below are the ones with the highest risk of defeat:
Chris Dodd (Connecticut)
The Obama seat (Illinois)
Harry Reid (Nevada)
Arlen Specter (Pennsylvania)
The Biden seat (Delaware)
Blanche Lincoln (Arkansas)
The Salazar seat (Colorado)
Byron Dorgan (North Dakota)
Up to dozens of House seats
More of the story here.