A democrat, none other than ol' "you don't know if you're being raped" Salazar (D-Thorton), mentioned he might go for upping the limit on magazine capacity to 30 rounds. He wasn't speaking on behalf of his party, he wasn't making a solid proposal, he just tossed that out there.
I doubt that the dems would have gone for it. even if it could have passed the house it'd be moot as it would have never passed out of committee to get to a floor vote in the house. And Hick would have never signed it, as Bloomie the Hut would have denied him permission to do so.
But like a scrap of meat dropped twixt two hungry dogs much fighting has ensued over it.
I won't get into the players involved as that's not all that important. What is important is that A: a lot of gunowners fell for it and B: a lot of gunowners don't realize what they fell for.