Cesare Borgia
Banned
I actually don't think this race would be much different now had it been Kasich/Rubio. They were bad candidates, there's a reason they barely made a blip during the primaries.
Her entire strategy for August would have been different, as well.
The race would be very different. Trump is a historically bad candidate who is under-performing with groups that usually go strongly for the GOP, from suburban white women to various other white demos. If you replace him with a regular republican with general election appeal it becomes a closer race, possibly a lean-GOP one with a Kasich-Rubio ticket. That dynamic would entirely change the type of campaign Hillary ran, Obama's involvement, etc.
Yea Kasich lost, but that says more about the GOP electorate than him as a candidate. In terms of Rubio yea, he ran a terrible campaign and would be running a bad general election campaign right now if he were the nominee.
We're witnessing something we've never seen before. A candidate making blatantly racist/bigoted/misogynist/etc comments, white supremacist ties, possible ties to an antagonistic foreign government...all packaged in a candidate who displays no basic knowledge on any topic and has anger issues. Yes I'd say Ted Cruz for instance would be doing pretty bad right now if he were the nom, but even he wouldn't be as knee deep in shit as Trump is.