Over the last four Presidential elections, voter turnout as been abysmal. Since 2000's election The highest voter turn out was in 2008 when 62.2% of eligible voters turned out to vote. That means since 1980, in our highest voter turnout for Presidential election, only 32.56% of people wanted the candidate that made it into the Oval office.
I believe that the largest contributor to this lack of turnout is the fact that we scheduled our elections on the first Tuesday of every November.
I personally feel changing the set date to a day in the weekend would massively increase voter turnout.