As far as I know there aren't any plans to put the whole "Road to the White House" storyline into TPBs, but I could be wrong. Why they haven't yet is beyond me. There were some great moments both pre and post election, (Luthor repainting the White House with lead paint; Batman attempting to retrieve Luthor's Kryptonite ring, to name a few.)
You can probably find the LEX 2000 one-shot at your local comic shop, which featured short stories by a variety of creators.
Before the election, there was the Emperor Joker storyline, which I'm also surprised is not yet in TPBs. We'll have to wait and see.