The data keep coming.  Voter ID doesn’t affect turnout:

“Indiana voter turnout in the two presidential elections before mandatory voter ID was 56 percent in 2000 and 58 percent in 2004. Turnout in presidential elections after ID was required in Indiana jumped to 62 percent in 2008 and fell back to 58 percent in 2012.

Voter ID also appears to have had little negative effect on Indiana midterm election turnout.

Before ID, turnout was 44 percent in 1998 and 39 percent in 2002. After ID, turnout was 40 percent in 2006 and 41 percent in 2010.

At the same time, the suspicion that Democrats would be unduly harmed by the voter ID law — the theory being low-income Hoosiers who vote Democratic are most likely not to possess an ID — also hasn’t come to pass.”