They put their version of religion above everything else which is obvious when you look at Harry Reid.
Isn't that supposed to be how it works?
Being a member of a religion is not the same as being a member of a particular country club, bicycle rally or Moose Lodge. In theory, the religion is deeper than an affiliation of like minded people in that religion is supposed to transcend the temporal. Harry Reid is a Mormon in label only. He is far estranged from Mormon Principles and teachings. In Nevada, only 7% of the population claims to be of the Mormon faith, not 27% in Idaho or 72% in neighboring Utah so I doubt the Mormon vote was consequential. What Nevada does have is plenty of union thugs and a strong presence of The Mob. The religion of union membership has greater solidarity and fidelity than your typical garden variety Mormon has to the LDS faith.
Only if you think you should also sit out elections when no one who shares your specific faith is on the ballot. Voting Mormon first and all else second, Catholic first and all else second, or any example you like, doesn't work unless you know that the person on the ballot is true to their faith and honest about it. What about voting for the Kennedy clan because you're Catholic? What sort of good idea is that if you know that abortion is murder? That's just one example and I'm sure there are plenty of other examples where someone claims to follow a particular religion but acts contrary to the tenants and beliefs of that religion when in office.
Now, in theory you could see that someone was true to the faith you share and know that they would act in accordance with that faith when in office. Unfortunately, most politicians put their politics ahead of their faith once they're elected. That's why I judge candidates on their track record rather than what they say is their religion. You could be right about the solidarity of other groups being greater than that of Mormons, I don't know. I do know that the few Mormons I know say it's very difficult for them to consider voting against a Romney because he is a Mormon even though they don't agree with everything he's done. Maybe the folks I know are an exception, and if so then you could be right. I've never dug into the matter beyond talking to a few folks I know who are Mormon.