538:

We don’t know final turnout numbers for Tuesday’s elections for the same reason we don’t have official winners in the Senate races in Alaska and Virginia: Ballots remain uncounted.

Nonetheless, enough data is in for Michael P. McDonald, a political scientist at the University of Florida, to make preliminary estimates of turnout. And what they show is a steep decline from recent national elections. McDonald estimates that just 36.6 percent of Americans eligible to vote did so for the highest office on their ballot. That’s down from 40.9 percent in the previous midterm elections, in 2010, and a steep falloff from 58 percent in 2012.