How will the Occupiers react?
This event presents an opportunity to find out how relevant the Occupier movement is to practical politics and the business of getting things done, as opposed to merely airing grievances. One party has offered a program of concrete actions to address some of those grievances -- the paucity of jobs and the explosion of inequality caused by a half-century of cutting taxes on the wealthy (economists and the CBO agree that the plan would be effective and actually reduce the deficit); the other has contemptuously rejected it. The difference in stance towards the Occupiers' expressed concerns is as plain as can be.
Will they respond to this? Will they even notice?