The tremors from Abdul El-Sayed's victory in Michigan's Senate primary will have been felt hundreds of miles away by the Democratic Party leadership. The question is whether the way El-Sayed has electrified the party base and tapped into their anger will work on general election voters. And whether an unabashedly left-wing Democrat can win in a swing state. The party establishment, which had backed his opponent, will hope so. Primary results across five states on Tuesday were a snapshot of the mood of the American electorate three months before the midterm elections.