Tomorrow is election day, and PPP has just released a slew of polls on the most important Senate races. PPP found Republicans leading in Pennsylvania, Illinois, Alaska and Kentucky, and Democrats with the lead in California and West Virginia. Colorado, Nevada, and Washington are all likely too close to call.

Lean Republican

Kentucky
Rand Paul (R) 55
Jack Conway (D) 40

Illinois
Mark Kirk (R) 46
Alexi Giannoulias (D) 42

Pennsylvania
Pat Toomey (R) 51
Joe Sestak (D) 46

Alaska

Joe Miller (R) 37
Scott McAdams (D) 30
Lisa Murkowski (Write in) 30

Lean Democrat

West Virginia
Joe Manchin (D) 51
John Raese (R) 46

California
Barbara Boxer (D) 50
Carly Fiorina (R) 46

Toss-Up

Colorado
Ken Buck (R) 49
Michael Bennet (D) 48

Washington
Dino Rossi (R) 50
Patty Murray (D) 48

Nevada
Sharron Angle (R) 47
Harry Reid (D) 46

If these races break exactly as PPP polling dictates, the Democratic caucus would be reduced to only 51 members. On the other hand, if the three toss-up races each break for the Democrat instead of the Republican, the Dem caucus would be down to 54 members–still a substatial margin by historical measures.