Donald Trump's final push for the GOP nomination starts Tuesday in New York, where the front-runner is heavily favored over rivals Sen. Ted Cruz and Ohio Gov. John Kasich.
The burning question is not whether Trump wins New York — if he doesn't, it will be among the biggest polling surprises ever — but whether Cruz and Kasich can pick up enough delegates to derail his nomination before July's convention in Cleveland.
Since Trump's last victory in Arizona's March 22 primary, Cruz has won a competitive race in Wisconsin, as well as a series of sweeping victories in North Dakota, Colorado and Wyoming, which awarded their delegates through state conventions rather than primaries or caucus
The Texas senator has argued that his recent wins mark a "turning point" that will carry him to a victory in a contested convention. That remains to be seen: Trump's position still looks strong in national polls, where a new NBC News/SurveyMonkey poll put him at 46 percent support among Republicans versus 28 percent for Cruz and 19 percent for Kasich, suggesting Cruz's victories reflected a favorable stretch of states rather than GOP voters abandoning Trump.