As Election Day nears, more business owners and executives are emphasizing to their employees how important it is to vote in the presidential race — and in some cases, at least subtly, who to vote for. One Ohio business owner put information about Republican Mitt Romney in employees’ mailboxes and offered to reimburse the ticket price for employees who saw 2016: Obama’s America, a movie critical of Democratic President Barack Obama. Another executive, Scott Farmer, CEO of Cintas Corp. based near Cincinnati, whose family members are major GOP financial contributors, blasted out an email to 30,000 employees last month in...