Texas Sen. Ted Cruz dropped his White House bid after a stinging loss in the Indiana Republican primary, a top Cruz campaign source told CNN.
Donald Trump surged to a decisive victory in the Indiana Republican primary Tuesday, CNN projects, while Ted Cruz's last-ditch efforts to win the state faltered, leaving Trump on the cusp of the nomination.
Though the real-estate mogul won't secure the 1,237 delegates he needs to formally claim the nomination until June, his Indiana triumph makes it almost impossible to stop him.
Following his decisive wins in New York and other East Coast states, the Indiana victory could put Trump within 200 delegates of the magic number he needs to clinch the nomination.
Cruz now faces the agonizing choice of whether to remain in the race, with his attempt to force the party into a contested convention in tatters, or to bow out and cede the party nomination to his political nemesis.