A Republican Purge?

Is it good that the Republicans purge themselves of persons like Arlen Specter? Yes. If these folks vote on crucial issues, like Specter did, what good does have him in the party? Should he win as a Democrat, the votes doesn't change. But if a conservative Republican replaces him, the votes change for the better. Last year we had a choice between ultra liberal Obama versus mostly liberal McCain. The "conservative" politicians who bemoan the lost of Specter are worried about their loss of personal power, not what is best for the country. If the Republicans had 51 seats, they would get bigger offices and more staffs but the votes would go the same - if the other seats were filled by the likes of Specter. Let the Democrats be the party that shifts to the right instead of the Republicans shifting to the left.