Presumptive GOP nominee Donald Trump predicts he’ll sail into the White House thanks to the “millions and millions” of new voters lining up to support the GOP. There’s just one problem: historically, these aren’t actually “new” voters. They are general election voters who are just new to voting in the primaries.

But, the exception makes the rule. In 1968, we saw over 60 percent of voters show up in a bitterly-contested, tumultuous election to elect Richard Nixon over Hubert Humphrey. It wasn’t until Obama’s first bid to the White House in 2008 that we saw a turnout even close to this number.

Could 2016 be another record breaker?

On one hand, the data doesn’t suggest that we will see a repeat of those historic turnout numbers. The Donald Trump vs. Hillary Clinton race for the White House is shaping into the battle of the “unlikeables,” as both candidates have blocks of voters who claim they will “never” vote for one or the other. Historically, highly negative campaigns tend to suppress turnout, as voters just decide to stay home and “sit out” this round.

Edelman’s own political consultants Bob Shrum and Steve Schmidt offer an alternate view. According to Shrum, Trump’s presence alone will motivate Democrats to do the exact opposite – turn out in high numbers in order to defeat him. Schmidt suggests that turnout in the general election is about the intensity of support in your base. When viewed through the prism of the primary season, he gives Republicans the turnout edge as for the general election.

Will Clinton bring over Bernie Sanders supporters to drive higher turnout as the first woman Presidential nominee of a major political party? Will Trump’s populism appeal to working class, white voters who have stayed home in the past?

As we’ve seen so far in this election season, anything is possible.

Rob Rehg is a regional president in Washington D.C.