I flew with a captain recently that was a sound no, and not only no, but a "no all the time...screw those management guys!"
I did not tell him that in this particular instance I lean towards supporting the proposal. It wasn't worth making a trip miserable to argue over stuff like that. I did ask him why he would vote no, and he told me it's because he doesn't want Parker to "win". That was his main reason.
The other captains I've flown with were mostly yes guys. Only one said he was voting yes simply because he wanted the money and was going to retire. The others voiced concerns similar to mine...that we will not fair well in arbitration and PK's track record is to not give in to labor...they haven't done it yet and they aren't about to start now with several other contracts to go.