February 4, 2010
Senior Editor Jennifer Duffy updates the range of potential net gains for Republicans in the Senate, concluding that the political environment, some recruiting successes and unexpected decisions by Democrats combine to put the GOP in a position to pick up between four and six seats. She also takes a look at whether Democrats’ majority is in danger, and provides updates on the 10 most vulnerable Democratic-held Senate seats.
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February 3, 2010
Former Republican Sen. Dan Coats will announce today that he will challenge Democratic Sen. Evan Bayh in November. Coats served in the Senate from January 3, 1989 until his retirement on January 3, 1999. Bayh won the open seat contest to succeed him. The race moves to Lean Democratic.
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January 25, 2010
Senior Editor Jennifer Duffy writes: Democratic Attorney General Beau Biden announced today that he will not be a candidate in November’s special election to fulfill the remainder of his father’s Senate term. Not only does Biden’s decision make Democrats’ efforts to hold the seat exponentially more difficult, leading us to move it to the Solid Republican column, but it impacts the overall Senate math. We have been projecting the range of net gains for Republicans in November at no net change to a pick-up of three seats. With Biden’s decision, we are now projecting a net gain for Republicans of two to four seats in the Senate.
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Senate At-A-Glance
A quick look at all Senate races, candidates and statistics. Updated weekly and printable for on-the-run reference. (Archive)
Senate Race Ratings
A top line review of the Senate races' rankings, printable on one page. (Archive)
Senate FEC Data
A summary of key information filed by candidates with the Federal Election Commission. (Archive)
Senate General Election Polling Data
A selection of reliable public opinion polling on key races across the nation.
Senate Primary Trial Heats Data
A selection of reliable public opinion polling on key races across the nation.
Three-Cycle Senate Race Chart
Bush Performance v. Kerry Performance. (PDF)
Five Cycle Senate Toss Up Races
Toss Up races and results from 1998-2006
2010 Battleground States
2010 Senate and Governors Races: McCain Performance vs. Obama Performance
DEM |
REP |
Partisan Breakdown |
57 |
41 |
|
Seats up in 2010 |
36 18 18 |
||
TOSS UP |
9 |
9 |
TOSS UP |
LEAN D |
3 |
0 |
LEAN R |
LIKELY D |
1 |
3 |
LIKELY R |
SOLID D |
7 |
13 |
SOLID R |
Up in 2012 |
30 20 10 |
||
Up in 2014 |
32 19 13 |
||