Because the choir is uncertain as to whether George Bush still wants to be a member.
Really? I didn't get that memo. Sorry.
Baloney. We know full well where Bush stands on social issues and what he has done so far. The truth is that some in the choir want to be pandered to in order to feel more important or special. If they want to have a snit about it, it's a free country, but it's neither rational or mature.
Or they are seeing proof of the suspicion that Bush is not likely to sing the same song or perhaps even the same melody in his last four.
If he doesn't they would feel responsible for whatever makes that agenda depart from what they would have supported. Rather than bear the "responsible" guilt they would prefer to sit on their hands in the election. It's signaling a "stay home" message.
Question is, where would it leave them if he deceived them by promises and actions and then performed the same unsupportable agenda. That answer could be a third party.