With the results (mostly; California can take weeks to tabulate all the results) in for the June 3 primaries, more than half of American voters have had a chance to vote in primaries this year–though not very many have taken advantage of it.

My first observation is that turnout has generally been low, and especially among Democrats. In some cases that is because Republicans have had seriously contested primaries in high-visibility statewide races and Democrats have not; that may have accounted for the higher Republican than Democratic turnout in Iowa this week, for example.