Statement by Senator Arlen Specter
Since my election in 1980, as part of the Reagan Big Tent, the Republican Party has moved far to the right. Last year, more than 200,000 Republicans in Pennsylvania changed their registration to become Democrats. I now find my political philosophy more in line with Democrats than Republicans.
This is why he's switching, the moderate Republicans in the state switched over to vote in the Democratic primary, leaving a much more conservative Republican base left. With Specter voting for the stimulus bill, he is pretty much guaranteed to lose the primary election in 2010.
I'm not sure why people here are praising this as the Democrats now having a filibuster proof majority. There already is a filibuster proof majority. They got their stimulus plan voted through no problem. They got their budget voted through no problem.