From the summary:
Voters are frustrated by the gridlock in Washington. Surf by C-SPAN on the dial and it is not hard to find members talking past one another from the political extremes.
In large measure, today’s stalemate is the result of partisan gerrymandering. The boundaries that separate districts hew to the partisan advantage of one party or the other, encouraging members of Congress to play to their party’s base, rather than the broad center of the electorate.
When members can’t lose, voters do — because it takes pressure off Congress to get the job done. But gerrymandering has another nefarious effect: pre-determined election results suppress the vote. This study explores just how dramatically partisan redistricting hampers the ability of voters to affect policy in Washington, D.C.
• Low Voter Turnout. The United States ranks 139th in the world in terms of voter participation, according to the Institute for Democracy and Electoral Assistance.
• 30,000 Additional Voters Cast Ballots in Competitive Elections. On average, 30,000 additional voters cast ballots when elections are competitive. That’s the equivalent of expanding the voting pool by one-sixth.
• 11 Million Votes Suppressed. As many as 11 million voters fail to cast ballots because of gerrymandering.
• 86 percent of Members Coast into Office. During 2002, 91 percent of House members won their seat by 10 percent or more. And in 2006, all but 60 of the 435 voting members of the House won by as large a spread.
• 28 Percent More Voters in Most Vs. Least Competitive Districts. On average, 214,000 voters cast ballots in each of the 60 most competitive House races run in 2006. In 60 of the least competitive elections (where members won by between 50 and 90 percentage points), only 153,000 voters came out to have their choices counted — 28 percent fewer.
• “Dirty Dozen” States. Of the almost 11 million suppressed votes, as many as 9 million might be cast in 12 particular states: Alabama, California, Georgia, Hawaii, Louisiana, Mississippi, New Jersey, New Mexico, New York, North Carolina, Virginia, and West Virginia.