Though I don't have an answer to your question, here is a Wikipedia article addressing the incumbency rate in congress: http://en.wikipedia.org/wiki/Congressional_stagnation_in_the_United_States It cites about a 90% re-election rate in recent years. I also found an excellent graph of re-election rates in the house and senate over the last 50 years (up to 2006) http://www.opensecrets.org/bigpicture/reelect.php Good luck with your search
Was reelected in 2008, due again in 2014
101 - 22 .827 winning percentage as of 2/22/2008
it was created by the continental congress
As of the 2008 season, Joe Paterno's coaching record is 372-125-3 for a winning percentage of .747.
Through the 2008 season, the Tampa Bay Rays have the worst lifetime winning percentage of any MLB team with .417 (742-1037).
See 111th US Congress. All four incumbents were re-elected in 2008.
Stephen Harper was reelected on 2008 October 14.
Was reelected in 2008, due again in 2014
Barack Obama was elected as the 44th President of the United States in 2008 and subsequently reelected for a second term in 2012.
Change Congress was created in 2008.
Vaclav Klaus is the second President of the Czech Republic, having been elected in 2002 and reelected in 2008.
Aikya Kerala Congress was created in 2008.
Armenian National Congress was created in 2008.
Iraq Veterans for Congress was created in 2008.
National Bahujan Congress was created in 2008.
2008 2008
The percentage of incumbent house members successfully winning re-election is very high. The low 90's are average, with the 2008 election showing 94% re-election rates.