Congressional stagnation in the United States
Incumbency financial advantage

The figures should be used with discretion, however, as half the incumbents dominated spending in their area to an even greater extent. If anything, this analysis may even understate how great the incumbency campaign finance advantage predetermines the election outcome, as the analysis examines only contested elections. For instance, in the 2000 election cycle, 64 incumbents ran for reelection unchallenged because the opposition party did not even mount a nominal challenge.
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