In the 2016 election, a wide gap in presidential preferences emerged between those with and without a college degree. College graduates backed Clinton by a 9-point margin (52%-43%), while those without a college degree backed Trump 52%-44%. This is by far the widest gap in support among college graduates and non-college graduates in exit polls dating back to 1980. For example, in 2012, there was hardly any difference between the two groups: College graduates backed Obama over Romney by 50%-48%, and those without a college degree also supported Obama 51%-47%.
Among whites, Trump won an overwhelming share of those without a college degree; and among white college graduates – a group that many identified as key for a potential Clinton victory – Trump outperformed Clinton by a narrow 4-point margin.
Trump’s margin among whites without a college degree is the largest among any candidate in exit polls since 1980. Two-thirds (67%) of non-college whites backed Trump, compared with just 28% who supported Clinton, resulting in a 39-point advantage for Trump among this group. In 2012 and 2008, non-college whites also preferred the Republican over the Democratic candidate but by less one-sided margins (61%-36% and 58%-40%, respectively).