White voters with at least a college degree—a group that represented more than a third of the 2012 electorate—back Clinton over Trump 48 percent to 37 percent, the latest Purple Slice online poll for Bloomberg Politics shows. Romney won that group by 14 percentage points, according to exit polls.

Among all college-educated likely voters, including those with post-graduate degrees, Clinton leads 54 percent to 32 percent, a much bigger margin than President Barack Obama’s 2-point advantage with a group that represented 47 percent of the electorate in 2012. Among voters with just a college degree and no post-graduate degree, another subgroup Romney won in 2012, Clinton is ahead 48 percent to 37 percent.

The findings suggest Trump is struggling to even rebuild the losing coalition Romney assembled, although other polls show the presumptive 2016 Republican nominee doing better among white voters without college degrees than Romney did. Since 1952, no Democratic presidential candidate has won college-educated whites, according to American National Election Studies data and exit polls reported by the Atlantic.