From CBSNews:

Six states have finished congressional redistricting to date, and it’s becoming clear that redistricting, as expected, is going to have an impact on House competitiveness next year and have set up a few interesting battlegrounds, as well as some surprises.

Looking first at the states finalizing the process in the last month, Indiana generated the most substantial impact to the complexion of the next Congress. Indiana (awarded nine congressional districts) and Missouri (with eight, having lost one seat) are the largest states to finalize the construction of new districts.

Controlled by a Republican governor and legislature, Indiana’s new map bolstered Republican prospects. For starters, Democrat Joe Donnelly, who narrowly avoided defeat in 2010, gained solidly Republican voters from Elkhart while losing democratic strongholds in Lapodte County. Overall, it is estimated the new 2nd district is five percent more favorable for Republicans. Perhaps consequently, Donnelly decided to run for the Senate, where Republican Richard Lugar faces a serious primary challenge. As for the 2nd district, Republican Jackie Walorski would be favored to win the seat next November.

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