Republican presidential candidate Donald Trump said on Tuesday he would have to "see how things play out" before accepting the results of Election Day, pointing to possible irregularities as he once again warned of a rigged system.

"We're going to see how things play out today. Hopefully they'll play out well and hopefully we won't have to worry about it, meaning hopefully we'll win," Trump said in a telephone interview on Fox News. "I want to see everything honest."