From the summary:
Problematic election laws and policies in ten swing states could impact enough voters to determine election outcomes.
Many of the elections for governor, the U.S. Senate and House of Representatives will be close in 2010. Potentially, party control of the Senate and House hangs in the balance; gubernatorial races will also be critical, with redistricting to begin shortly after the elections. These dynamics set the stage for election time mischief and attempts at suppression and manipulation of registration and voting rules, especially in close contests where a handful of votes could tip the balance.
In other words, the laws and policies governing voting have the potential to be game changing.
In this report, we review a number of election laws and policies in 10 states chosen because they are expected to have close elections. In each state, there are problems with election laws, policies and practices which could impact enough voters to determine election outcomes.