Victory for whom? Why should leftists concede their core principle( the dismantling of capitalism) to preserve capitalism?
Maybe liberals should give up preserving capitalism and join with leftists.
And yes, the threat of fascism is real, and many leftists, myself included will vote for whichever candidate prevents that. But many, rightfully so, understand the relationship of capitalism and fascism, and can’t bring themselves to “kick the can down the road.”