The outcome of the 2010 election will have a lasting impact on Congressional elections. Republicans are likely to have sole authority over the redistricting of almost half of the Congressional districts, and share control over almost all the rest. Sean Trende and others have recently written about this. Combined with the Republicans’ inherent advantage in Congress due to the concentration of liberal voters in urban districts, there is a strong chance that the 2010 takeover of Congress by Republicans will be enduring.