Not going to happen, but I wonder how a mixed party ticket would do. Kamala (or whoever) + Mitt Romney as VP ? Has it ever been done? Would it work to attract the center/swing vote, or more likely to be a negative?
Was thinking that too and it might be a brilliant way to get the folks on the right that don't want to vote Trump but also not necessarily a dem. Also it could be a great marketing tactic to be like 'we're bringing unity back' or something to that. And theoretically no reason it couldn't happen other than both parties definitely not being on board with it.
I think the problem is that both parties have moved, the democrats shifting left and the republicans shifting right (and to put the cards on the table, I think the republicans have shifted a lot more rightward than democrats have leftwards). This leaves people pretty unwilling to go for a split the difference approach. Like if you ask people in favour of a centrist position, they're probably picturing someone in the middle of Bill Clinton and George W Bush, and thinking " I could manage with that". But for a lot of the core democratic vote, they see a Romney as the result of drawing a line down the middle and they already decided he was too right wing for them. Or similar, the republicans are worried that splitting that line down the middle ends up at Hilary, who they already didn't like. So while a lot of people express support for compromise and consquently centrism, you'll get into a lot of infighting when you try to decide what the centrist position actually is..