Despite initial projections of high voter turnout the eventual number did not match those projections. (slaw.ca)
While it's not 100 percent clear, there are policies that seem to encourage higher voter turnout. (wamc.org)
And the answer isn't: «Other developed countries have higher voter turnout» Except for an extremely small percentage of the population, those who want to vote, can. (politics.stackexchange.com)