In a shocking move, Senator Arlen Specter (R-PA) announced on Tuesday his decision to switch parties and become a Democrat. Specter said he found himself "increasingly at odds with the Republican philosophy." One of the last moderate Republicans left in the Senate and in the Northeast, Senator Specter affirmed he was not willing to let the Republican primary electorate --which, after a massive diaspora of moderates to the Democratic Party, has become a minority of right-wing conservatives-- d...