Donald Trump was denied a victory in a key winner-take-all state, Ohio, which was won by its own sitting governor, John Kasich.
That victory doesn’t make Kasich a likely nominee: he has now won a grand total of one state. But, without Ohio’s 66 delegates, Trump now faces a difficult path to reach the majority of delegates he needs to avoid a “contested” GOP convention, in which no candidate enters with a majority of delegates locked up.
In that chaotic situation — not seen in the GOP since 1976 — delegates could choose one of the candidates who ran, or someone else entirely. If their choice is not Trump, the party may have to face strong anger from his supporters, or even a third-party candidacy from Trump himself.
(C) The Washington Post