From National Review Online:

Then, of course, there is the factor of redistricting. Demographics and polling guru Michael Barone examines that potential factor here. The governorships of Ohio, Tennessee, and Wisconsin appear key, along with control of the legislative chambers in Indiana, Michigan, Ohio, Pennsylvania, and Wisconsin. Barone also notes that to maximize Republican advantages, Meg Whitman will need to be in a position to veto the Democrats’ most lopsided efforts in California. He adds that district lines redrawn to favor one party aren’t guarantees; over the course of the decade, voters move, attitudes change, and once-safe seats start drifting into the grasp of the opposition.

In July, the Republican State Leadership Committee — the national committee that tracks, coordinates, and leads GOP efforts at the state-legislative level — projected that Democrats would not take control of a single state legislative chamber in the country this year, and that Republicans would pick up four chambers, with twelve additional Democrat-controlled chambers in key states “in play.” Their assessment concluded, “Republicans have an opportunity to create 20–25 new Republican Congressional Districts through the redistricting process over the next five election cycles, solidifying a Republican House majority. In fact, 33 of the 75 most competitive congressional districts, as identified in National Public Radio’s June report, are located in [RSLC] target states this year. If [RSLC] achieves its goals, nearly half of the traditionally swing districts will be redrawn by Republicans before the 2012 election cycle. The remaining seats will either be subject to Democrat control or part of a partisan-neutral redistricting process.”

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