INDIANAPOLIS (AP) — Texas Sen. Ted Cruz ended his presidential campaign Tuesday, eliminating the biggest impediment to Donald Trump’s march to the Republican nomination.

The conservative tea party firebrand who tried to cast himself as the only viable alternative to Trump ended his campaign after a stinging defeat in Indiana’s Republican primary.

Cruz told supporters in Indianapolis that “It appears that path has been foreclosed.”

Cruz said he “left it all on the field of Indiana.”