In the House, Republican prospects have been buoyed by several successful rounds of redistricting, which have sharply reduced the number of competitive seats and given the Republicans a national advantage of at least a dozen seats.
Thomas E. MannIn addition to the decline in competition, American politics today is characterized by a growing ideological polarization between the two major political parties.
Thomas E. MannRedistricting is a deeply political process, with incumbents actively seeking to minimize the risk to themselves (via bipartisan gerrymanders) or to gain additional seats for their party (via partisan gerrymanders).
Thomas E. Mann