Texas Sen. Ted Cruz is ending his presidential campaign, eliminating the biggest impediment to Donald Trump’s march to the Republican nomination.

Cruz’s campaign said he plans to drop out of the race Tuesday following his loss in Indiana’s Republican primary to Trump.

Cruz’s campaign placed its hopes on a data-driven effort to turn out conservative evangelical Christians who had opted out of recent presidential elections. Increasingly, he would modify his travel schedule to go where data showed there might be pockets of untapped supporters.