The nomination was barely sealed up at the Democratic National Convention before Bernie Sanders, who had campaigned against Hillary Clinton for the party’s nod, went back to being an Independent.
Sanders, who considers himself, officially, an Independent in Congress because his views lean further left than the Democratic party’s platform, caucuses with Democrats. But until declaring an intention to run for the presidency in 2015, he had rarely, if ever, identified as a member of the Democratic Party (he’s been in politics since 1979).