The New York Times has a handy little interactive map with some handy filters to keep an eye on the upcoming Senate, House and Gubernatorial races [1] (registration may be required). Looks like pretty good news for the Dems (and by extension the rest of the world).
Links:
[1] http://www.nytimes.com/ref/washington/2006ELECTIONGUIDE.html?currentDataSet=senANALYSIS
[2] http://www.addtoany.com/share_save?linkurl=http%3A%2F%2Fthehindsightfactor.com%2Felections_to_drool_over&linkname=Elections%20to%20drool%20over