Judging from the thread on the President's staff making fun of extremists, the party hasn't really been hijacked by comet hoppers.
People who try to impose religion on political parties will always be held in check by the need to get a majority. You can see reality looming over the democrats as the election approaches. The anti-war crowd has been muzzled.
Muzzled?!
The 'IRAQ is dragging us down' crowd are as vocal as ever!