It's probably fair to say that presidents Bush and Obama both had ups and downs in their relationship with Putin, but neither party's voters were ever particularly fond of Russia or Putin. Until the whole mess started last year and a good number of Trump voters suddenly realized how great a guy Putin was. Or, you know 'the enemy of my enemy is my friend', and nevermind that he's the dictator of a nation whose interests don't exactly align with America's.
Though to be fair, the same thing applies to the populist right in Europe - a 'strong' dictator whom the European establishment and lefty intellectuals loathe? Awesome!
But anyway, to get back to your point - I haven't seen much evidence yet that is very convincing about real collusion. I'm not aware of anyone who ever took Donald Trump Jr. seriously for a second, and he didn't have any role of importance in the campaign, so who cares if he met with some Russian lawyer or what he wrote in his emails? If it had been his sister, who actually matters, it might've been a different story, though still tenuous, so far. But collusion or not, you'd think that Russian interference in an American election, if proven, is a pretty big deal, regardless of who ultimately benefits. The fact that the stuff they released is genuine doesn't really change that.