Donald Trump will have to overcome big league odds to win the presidential election, an analysis of early voting turnout reveals.

In advance of the Nov. 8 election, 13.4 million voters have cast ballots — with voter registration giving Hillary Clinton the early edge against Donald Trump.

If Democrats in Florida, North Carolina, Nevada, Colorado and Arizona are in fact casting votes for the Democrats then it could be virtually impossible for Trump to mount a comeback, according to the Associated Press.

“It’s going to be a very tall order for Trump to win,” the University of Florida’s Michael McDonald told the wire service.

The analysis is based on only the available data — which details by party registration how many Democrats and Republicans have already voted.

In Florida, Democrats and Republicans each make up 41 percent of the vote already cast. But at this point in the last two presidential election, Republicans had a much clearer advantage. And Barack Obama won the Sunshine State in both the 2008 and 2012 elections.

“If current early vote trends hold, it’s a real possibility that Clinton can sweep a majority of swing states including Florida,” Republican pollster Scott Tranter told the AP.

However, the Trump campaign has maintained that there is a “silent” vote in support of the mogul — and that their candidate has uniquely been able to attract Democratic voters.

“We think there’s a big hidden Trump vote in this country,” campaign manager Kellyanne Conway said in August.

The “hidden Trump vote” would not necessarily be apparent in early vote totals that are based solely on party registration.