Are pastors allowed to say that? To name a person? Don't think they can in Canada. But I'd rather a pastor say vote Trump than a progressive liberal (who ever the nominee will be). Not to derail the thread but I think it's very important to discuss politics in the church. Issues like gay marriage/ transgender, abortion, supporting Israel are all issues Christians need to know about.
I'll agree that it's important for Christians to hold a clear Biblical opinion on the above issues, but it would be a red flag to me if in the church's discussions / teaching on such issues they were more concerned about society's laws than the redemption and spiritual rescue and restoration of the people who struggle with their identity or lives in such ways. I don't think we can be faithful proclaimers of "the good news" if all we have to offer the most struggling and hurting among us is " well you shouldn't have done all that stuff you've already done that got you into this situation in the first place". Now when they come into the fold absolutely we expect a process of change to take place, but there's still going to be challenges from their pre-Church life that the church needs to compassionately help them out with.
And all too often I find among older Christians this idea that people who sin like sit down and make this logical choice that they want to do wrong and rebel against God. Like people could clearly see that they had a lot of options and deliberately chose the most sinful and destructive one because they aren't interested in God in the least. The older I get and the more people I actually like interact with and get to know; the more ridiculous that position seems. Understanding doesn't justify sin, but it might just help us be a bit more gracious and a bit wiser in helping people get out of the sin they're trapped in.