"Pro-lifers are welcome to work the phones, work election day, send in campaign donations...but when they expect to finally see their issue addressed, they're told to go to the back of the bus and shut up."
Pro-lifers are in the same situation with the GOP that African-Americans face with the Democrats. Until there is a credible threat of the vote going elsewhere, nobody listens. Hence, the Bush Admin's endless pandering to the Latino community, while pro-life voters are ignored.
Your analysis is right on the money!