I cannot vouch for single-payer, abortion, and the kelo decision.
But I have extensively researched the gun control issue, and have written several articles about Trump’s views.
Your assertion on gun control is simply false. Trump in a couple of instances, put forward views that weakly supported a couple of gun control positions, 15 years ago. For example, he said that he supported the “assault weapon” ban that was already law at the time.
Weak support for an existing law.
Since then he revised his position and has strongly supported solid, pro-Second Amendment positions. He has done this more clearly and convincingly than all the other candidates other than, maybe, Ted Cruz.
http://gunwatch.blogspot.com/2015/09/donald-trumps-policy-on-second-amendment.html
Trump’s stances on single-payer, abortion and the Kelo decision are well-documented, as is his position on “assault weapons.” His position in 2000 was that the GOP was in lockstep with NRA. The fact the “assault weapons” ban was law at the time is immaterial, as the point is he was agreeing with it.
People can try as they might to attribute those positions to “years ago,” or “making nice for business’ sake,” but the fact he’s vocally carried those stances is what should give voters pause.