text: You could argue that the method of slecting a president through Electoral college may turn off potential voters for a canidate that has no hope if carrying their state,  knowing their vote will have no effect.  Then they might have less incentive to pay attention to the campaingn. But being realisic, no voters one vote swings a natioal electon, and about one half of the eligable American population did vote in 2012's election.