From Michael Barone

Eighteen months ago, it looked like Democrats were going to profit from redistricting. An optimistic scenario for Democrats, extrapolating from the 2008 election results, was that if they could gain three governorships and three state senates and otherwise hold what they had, they would control redistricting in 14 states with more than five districts, including California, New York, Illinois, Michigan, North Carolina and New Jersey.

Those states are projected to have 195 districts in the House elected in 2012. Clever redistricting could move between one and two dozen into the Democratic column. That would have been the Democrats’ best redistricting cycle since the one following the 1980 Census.

But that scenario now is the stuff of dreams. Democrats are threatened with losing many governorships and legislative chambers, and their chances of taking over many from the Republicans look dismal.

Instead, the optimistic scenario belongs to the Republicans. If they hold what they have and capture a few governorships (Ohio, Tennessee, Wisconsin) and a few legislative chambers (the Houses in Indiana, Michigan, Ohio and Pennsylvania, and both houses in Wisconsin), they will control redistricting in 11 states with more than five House seats, including Florida, Georgia, Michigan, Ohio, Pennsylvania and Texas. Those states are projected to have 178 House seats.

This would be an even better redistricting cycle for Republicans than the one following the 2000 Census, which was their best in 50 years. It could move one to two dozen House seats into the Republican column.

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