...are there realistic paths to the Republican nomination for other candidates? If so, what are they? For who?
For: Anyone but Trump
Path to Victory: All R candidates but one drop out before Trump picks up enough delegates to wrap up the nomination with his 40% ceiling (and I'm being generous with that ceiling).
Doesn't matter who that last one is, really. All that matters is that someONE can gather all the Not Trump votes in the later, winner-take-all primaries and get enough total votes to unquestionably win the nomination.