From the story here:
Republican presidential front-runner Donald Trump added 12 delegates from Missouri on Tuesday, nearly a month after his narrow victory in the state's primary.
Missouri Secretary of State Jason Kander — a Democratic candidate for U.S. Senate — certified the March 15 primary results, giving Trump the additional delegates.
The race had been too close to call, but according to the final tally, Trump won with 383,631 votes. Ted Cruz had 381,666 votes.