The typical middle-to-left voter is often among the least economically able:  working class wage-earner and/or a member of a minority group, although that demographic may be changing this year.   A known GOP tactic is to make it more difficult for those citizens to cast a vote.  Reduction of polling places and open hours means those many of those who are least able to afford it will have to travel further and wait longer.  And in general, historically, the fewer people vote, the better chance the Republicans have to win.