Dem's Great Senate Hopes

The GOP might pick up some Democratic seats, too - as long as the presidential race is not a Democratic landslide. Sens. Mark Pryor (D-Ark), Mary Landrieu (D-La.) and Tim Johnson (D-S.D.) could all be in danger. And Joe Biden (D-Del.) may retire. But, in a Democratic year, all these seats may be safe.

If the Republicans lose Virginia, Nebraska, Colorado, New Hampshire, Maine, Oregon and Minnesota - and pick up no new seats - the Democrats will have 57 votes in the Senate (counting Independent Sen. Joe Lieberman, who votes with them). It's enough to let a new Democratic president have her way legislatively without too much trouble.