How many of those 661 are from the district? Regardless, it should be an interesting race. If Murtha is defeated and if the reason for his defeat can be identifeid as his opposition to the war then it'll be interesting to see how fast other Democrats change their tune.
I have no idea, but likely not very many. It's just a measure of the anger out there at what Murtha has done in betraying our troops. And many of those 661 have likely been sending her campaign $$$.