A new LendEDU online poll of more than 3,000 college graduates with student debt found that Donald Trump leads Hillary by 13 points, but Bernie Sanders is ahead of both.

The results reveal a dramatic shift in support among the demographic since part one of the survey was released in February. While Sanders has retained his top spot at 36 percent, support for Hillary has plummeted from 23 percent to just 13. Meanwhile, support for Trump has jumped from 10 percent to 26 percent. The number of undecided voters also increased from 14 percent to 26 percent.

The student loan company that conducted the poll, LendEDU, also asked respondents which they consider to be a bigger threat to the U.S.: student loan debt or ISIS?

Fifty-four percent of respondents replied that student debt is the bigger threat.

This becomes less surprising, however, when considering that there are more than 43 million Americans paying paying off a collective student loan debt of $1.3 trillion.

The support for Sanders is relatively unsurprising as he has made his war on student debt and campaign for free tuition flagship issues in his presidential run. But as the possibility of Sanders clinching the Democratic nomination grows increasingly unlikely, the question becomes: where will his college graduate support go if he drops out?

A recent survey conducted by NBC News and the Wall Street Journal shows that a surprising number of Sanders supporters are favorable toward Trump, with less than half of respondents saying they would vote for Clinton if Sanders drops out. In a recent survey conducted by The Guardian, 500 of 700 respondents were considering a Sanders-Trump switch.

If these numbers hold true among recent college graduates, Trump could see a surge in millennial support if Sanders is defeated.