Republican National Committee Chairman Reince Priebus says it’s “highly, highly doubtful” that Donald Trump won’t be the Republican nominee.

During an interview with Politico on Friday, Priebus said it’s “highly, highly doubtful” that someone else would be chosen as the nominee, but added that anything is possible.

After Trump won Indiana and Sen. Ted Cruz (R-TX) suspended his campaign, Preibus posted on Twitter that Trump was the presumptive nominee.