This blog entry has been brought to you by Wal-Mart. Wal-Mart: we think unions are smelly!
So, yes, the Supremes ruled 5-4 (naturally) against restrictions on corporate advertising during elections. No surprise: the Roberts court was, and is, a profoundly corporatist creature.
This does slightly help unions and non-profits like the ACLU, but the money gap there is just too much to contemplate. Wal-Mart is going to be able to, quite literally, buy their own candidates. Sure, they can't donate directly or coordinate, but who cares? Most campaign spending is advertising anyway. If a corp can pick up that slack, the campaign's fundraising work is a million times simpler.
America: It Was Nice While It Lasted.(tm)