Ted Cruz’s supporters have been furiously arguing this week that Marco Rubio and John Kasich should drop out of the GOP presidential race so that Ted Cruz can beat Donald Trump in a head-to-head match-up.

From the perspective of anyone-but-Trump voters, there are good arguments both for and against the Cruz position. It mostly depends on whether Cruz in a two-man race would be more likely to defeat Trump in the delegate-rich contests after March 15—most of which are in blue and purple states—or whether a three- or four-man race is more likely to keep Trump from a majority of delegates.