It almost seems like they know they have no chance against Spitzer & know Hillary wins in a landslide so why even bother with a primary
I highly doubt thats their logic. Their logic is probably that if they do it this way Weld has no chance of being the nominee because it will be party bosses and such that choose the nominee, they dislike him because he rose to power without relying on the NYGOP.
The NY GOP is a bunch of nincompoops who have run the party into the ground. This is a perfect example of their logic.
