Donors to G.O.P. Candidates: You’re on Your Own

The Republican presidential race has often resembled The Hunger Games, with a crowded field of bloodthirsty candidates kept alive by the grace of their patrons on the sidelines. The story has taken a darker turn in recent weeks, with panic creeping in as Donald Trump continues to step over the bodies of more electable candidates. But with no clear winner emerging from New Hampshire, Republican donors, who were once ready to coalesce around Marco Rubio, have pressed pause on their money to see if a candidate will walk out of...