Why Specter Did It — And Had To Do It | Talking Points Memo

So why exactly has Sen. Arlen Specter (R-PA D-PA) switched parties?

It really comes down to electability — specifically electability as a Republican. Specter’s own statement acknowledged that his support for the stimulus bill has made his position untenable with the GOP:

This is a companion discussion topic for the original entry at https://talkingpointsmemo.com/?p=143377