That's not a danger any longer. Democrats, up to and including those in the White House, fully realize the stakes of this election, and now they have three-plus months to do what they can to move big historical trends in their direction.
The appetite for sweeping legislative action has been sapped in Congress. But that doesn't mean Democrats can't move some things along, starting with unemployment insurance extensions that have fallen victim to deficit concerns, and perhaps extending through a scaled-back energy bill that responds in part to the BP oil mess.
By framing a few choice issues as emblematic of the "choice" between the Obama agenda and what Republicans offered under the Bush years, Democrats hope a public that isn't yet sold on a return to GOP power can be kept in their fold.