A lame duck Congress would have two months after the 2012 election to stave off the expiration of both that tax policy and the super committee's "automatic" cuts.

The most likely scenario: The super committee locks up along partisan lines and, after the 2012 election, bipartisan negotiators deal with the tax cuts and the super committee's sequestration cuts, along with a basket of other expiring provisions, in one set of negotiations. Democrats will be pressured by the coming sequestration, while Republicans will be motivated by the expiration of the Bush tax cuts. And all of their negotiations will take place in a political and economic climate impossible to predict today.