by Jason Le Miere, Newsweek | Bernie Sanders supporters switched their allegiance to Donald Trump in large enough numbers last November to sway the election for the real estate billionaire, according to an analysis of voter data released Tuesday by the blog Political Wire. Since Trump’s shock victory over Hillary Clinton, much discussion has focused on the degree to which passionate Sanders supporters’ refusal to embrace Clinton led to the Republican winding up in the White House.
According to the analysis of the 2016 Cooperative Congressional Election Survey, fewer than 80 percent of those who voted for Sanders, an independent, in the Democratic primary did the same for Clinton when she faced off against Trump a few months later. What’s more, 12 percent of those who backed Sanders actually cast a vote for Trump.
While much was made of the so-called Bernie-or-bust phenomenon, the number of Sanders supporters who crossed party lines to vote for Trump in 2016 may not be that unusual. A 2010 study in Public Opinion Quarterly found that in the 2008 election 25 percent of those who voted for Clinton in the Democratic primary ended up voting for Republican John McCain, rather than Barack Obama, in the general election.
