Former Rep. Pat Toomey (R-PA) has made it official: He is running in the 2010 Senate primary against moderate GOP incumbent Arlen Specter, who he very nearly defeated in the last primary in 2004 — a development that may well increase the chances of the Democrats picking up this seat.
This is a companion discussion topic for the original entry at https://talkingpointsmemo.com/?p=143804