Michael Barone has an interesting column where he examines the down ballot races. His focus is on the outcome of the Democratic battles in congress and state houses in light of the shifts due to reapportionment from the 2010 census results. While it is true that Republicans blew up their hopes of gaining a majority in the Senate, the numbers beyond that are not encouraging for the Democrats:
Between 2008 and 2012, they gained seats in only three states: Delaware, where a popular Republican ran for the Senate in 2010; Maryland, thanks to Democratic redistricting; and California, where a supposedly nonpartisan redistricting commission was dominated by Democrats.
The reapportionment process following the 2010 Census cost Democrats some seats because their strong states had relatively little population growth. They have five fewer seats in New York, for example.
The reapportionment effect was strengthened because the 2010 backlash against Democrats gave Republicans control of redistricting in Michigan, Ohio and Pennsylvania, all of which lost seats, and North Carolina, which stayed the same.
As a result, in the 113th Congress, as compared to the 111th, there will be three fewer Democrats from Michigan, six fewer from Ohio, seven fewer from Pennsylvania and four fewer from North Carolina.
Democratic losses were greatest in the South, which gained seven seats from reapportionment. There will be 22 fewer Southern Democrats and 29 more Southern Republicans in the House next year than there were in 2009.
Another way to look at it: 123 of 201 House Democrats will be from the Northeast, the West Coast, Hawaii and Illinois. Only 23 are from the Midwest outside of Illinois and only 42 from the South.
Obama was able to build his electoral vote majority thanks to big Democratic majorities from core constituencies concentrated in these states, which gave him 207 electoral votes.
But the concentration of blacks, Hispanics and gentry liberals means there are fewer Democratic votes in the suburbs, the countryside and the geographic heartland. The Obama campaign strategy concentrated on turning out core voters. That left House Democrats short of the votes they needed elsewhere.