Yes, but the other 60-65% are ALSO their constituents, and there are more of them who flat-out HATE the guy than there are of you worshipers.
Don't get me wrong Cecilie, I don't worship Trump, and he's not worshiping material. I don't do idolatry. Like I said to you, I'll probably wind up regretting my choice.
In elections, numbers matter obviously. If 40% of your constituency chooses not to vote for the nominee in the general election, it won't matter if there are more of them than the "worshipers." The nominee is screwed.
As of 2012, there were 30,700,138 registered Republicans (and I'm sure it has grown since then), but if 40% of the base decides to stay home, that's 12,280,055 of them that won't vote for the nominee in the election (that's assuming they don't, and this is only a hypothetical).
There were over 143 million registered voters in 2012. Those 12,280,055 people would represent about 8.6% (give or take a few decimal points) of the entire electorate. That would devastate the Republican nominee if they were spurned in this manner.