The newest version of “Vital Statistics on Congress” is available free on-line at this link. The work is a joint product of the Brookings Institution and the American Enterprise Institute. The Chapters include: (1) Demographics of Members of Congress; (2) Congressional Elections; (3) Campaign Finance in Congressional Elections; (4) Congressional Committee Data; (5) Congressional staff and operating expenses; (6) Legislative Productivity in Congress; (7) Congressional Action on the Federal Budget; (8) Political polarization in Congress and Changing Voter Alignments.

The chapter on Congressional Elections has these contents: (1) Turnout in Presidential and House elections 1930-2012; (2) Popular Vote and House Seats Won by Party 1946-2012; (3) Net Party Gains in House and Senate Seats, 1046-2012; (4) Losses by the President’s Party in Midterm Elections 1862-2010; (5) House Seats that changed party 1954-2012; (6) Senate Seats that changed party 1954-2012; (7) House incumbents Retired, Defeated, or Reelected 1946-2012; (8) Senate Incumbents Retired, Defeated, or Reelected 1946-2012; (9) House and Senate Retirements by Party 1930-2012; (10) Defeated House incumbents 1946-2012; (11) Defeated Senate incumbents 1946-2012; (12) House Elections won with 60% of Major party vote 1956-2012; (13) Senate Elections won with 60% of Major party vote 1956-2012; (14) Marginal Races Among Members of the Congress Elected in 2012; (15) A summary of the number of defeated incumbents in primaries and general elections; (16) The number of US House districts that voted for one party for President and another party for Congress, 1900-2012; (17) The number of US House districts carried by the winner of the presidential election 1952-2012; (18) Shifts in Democratic Major Party vote for U.S. House 1956-2010, excluding shifts after redistricting years; (19) What percentage of people who identify in public opinion polls with one major party voted for the other major party in presidential and congress elections 1956-2010.

Thanks to Michael Malbin of the Campaign Finance Institute for the link.