Momentum ahead of Tuesday's presidential vote is all behind the campaign of GOP nominee Donald Trump – and that's "everything you need," Republican National Committee head Reince Priebus declared Sunday.

In an interview with ABC News' "This Week," the party chairman said he was confident about the candidate's chances against rival Hillary Clinton.

"We've got the momentum," he said. "That's the difference...Momentum is everything you need."

Polls have shown the race tightening with just days to go.

Priebus also was confident for Trump's chances in traditionally blue Michigan, calling it an "absolute toss-up."

And when you look at a place like Michigan… people are out of work, want things to get better… I think Donald Trump is offering that vision. We win a state like Michigan, it's all over."



