Of course. And it's kind of the basis for my comment. If a party achieves power and they completely believe they're in the right, then it's just logical that they would use any means necessary to ensure that they remain in power.
And at the end of the day, all these elected politicians are going to do what's best for them individually. Meaning, they're all likely to change their views to some degree if it means getting reelected.
Maybe a handful are altruistic enough to act solely with their beliefs. But to get to the level of politics we're talking about, there's bound to be some moral compromises somewhere along the way.
Because ultimately, it's takes money.