I have seen this suggested several times, but Obama and his cronies are notoriously bad at economics and any form of government other than organized crime type.
So the question becomes, who actually does benefit, the Dems or Republicans and conservatives, if we go over the fiscal cliff?
I am betting that the Republicans will come under pressure for a month or two, but then the pressure will shift to the Democrats, and become a lot more intense.
And remember, the fiscal cliff is just one economic disaster. There are a bunch more waiting to happen, and they could totally mess up the Democrat scheme.
Upon what evidence do you place that wager? The press has Obama's back, and will cast all blame on the GOP. It is upon the Pubbies the pressure will increase, not the Dems. I'd take your bet in a second.