Comments are invited on the most recent report published by thirty-thousand.org (TTO) entitled: "Reelection Rates of Incumbents in the U. S. House By Congress and by State"

The report is described at:
http://www.thirty-thousand.org/pages/QHA-08.htm
which also provides a link to download the report (PDF).

For the first through to the 108th Congresses this report evaluates the available data in order to calculate the following three measures:

Data Adequacy: for each Congress, what percentage of the data clearly indicates whether or not the incumbent sought reelection?

Sought-Reelection: for each Congress, what percentage of the Representatives attempted to be reelected to the subsequent Congress?

Reelection Rate: for each Congress, what percentage of incumbent Representatives who sought reelection succeeded?

Further, this report shows the extent to which inadequate data precludes reliably drawing conclusions. An estimation is provided in order to resolve, if only hypothetically, the ambiguity that results from the inadequacy of the data.