I don't like this but I'm not really worried about it. Employees generally don't like their boss and they don't like people telling them how to vote on the shop floor. They sure don't like to lose a days pay and being forced to attend a rally. I think this is more likely to backfire than to get votes for Romney.

This is the kind of insidious thing that tends to become normal after awhile.  Campaigning at work, especially with intimidation, is nuts.  "Troubling" hardly describes it.  This should never happen, and in a saner century it never would.

From your article: 

As Marquette University law professor Paul Secunda told me last year:

"Before Citizens United, federal election law allowed a company like Koch Industries to talk to officers and shareholders about whom to vote for, but not to talk with employees about whom to vote for. Now, companies like Koch Industries are free to send out newsletters persuading their employees how to vote. They can even intimidate their employees into voting for their candidates. It’s a very troubling situation."