As voting rights advocates predicted loud and often, new voter ID laws seem to be hitting Democrats harder than Republicans.

GOP voter turnout in this year's presidential race is up 62 percent relative to 2008, the last time both parties had open contests. But Democratic voter turnout is down by 29 percent across all the primary and caucus states that have voted so far. In all but two states, fewer Democrats turned out to vote in 2016 than did in 2008.

Evidence suggests that new voting restrictions are at least a contributing factor.

Eight out of the 16 states that have held primaries or caucuses so far have implemented new voter ID or other restrictive voting laws since 2010. Democratic turnout has dropped 37 percent overall in those eight states, but just 13 percent in the states that didn't enact new voter restrictions. To put it another way, Democratic voter turnout was 285 percent worse in states with new voter ID laws.