I think Trump's policies are no worse, and in some cases better, than most of the other Republican candidates (including those who have dropped out). But I think Trump would be far worse, for two reasons. First, his temper is unpredictable, and while I'm not saying that he's going to start a war over hurt feelings or something like that, I can't say that that's impossible, and that's scary. The other thing is that I don't think we've ever had a President with no government experience whatsoever. Unless I'm forgetting someone, every President had some important government role, be it a member of Congress, Governor, Cabinet member, or high-ranking military official. I think that could be important, too.
(BTW, I'm not a Democrat voter; I'm a Democratic voter. Democrat is the noun. Pet peeve of mine.)
Cruz would be worse because he is an ideologue. True believers on either side of the spectrum are dangerous. Where Trump is worse is foreign policy because it isn't "The Art Of The Deal" and his personality is poison. Kasich is the least bad of the lot.
But all the GOP candidates are better choices than a 75 year old socialist and an old bat who has never stuck to a position in her lifetime. (not saying I'm voting GOP, Libertarians will get my vote again this year)
Trump = fearmongering Cruz = fearmongering Kasich = not fearmongering as bad as the others, which is why he seems reasonable by comparison. Still a terrible candidate, especially having lived through him as Governor.
And I'll take the 75 year old socialist with consistent ideals and positions for a party that is pro-science and pro-equality over the unbalanced 70 year old blowhard narcissist who changes positions wherever the wind blows for a party of the 1%.
FWIW, I also like Gary Johnson and wish he had more voice in these elections.
"As you may have read in Robert Parker's Wine Newsletter, 'Donaghy Estates tastes like the urine of Satan, after a hefty portion of asparagus.'" Jack Donaghy, 30 Rock
Kasich would be the best of the three, but his personality is that of still water. His economic policies seem to depend on if Lebron is in Cleveland. Sanders is my pick, but I will rally for Hillary for the Court pick and she is not a GOP candidate.