a. + incumbent >>共 156
democratic 24.48%
republican 22.82%
popular 3.87%
congressional 3.18%
vulnerable 2.21%
longtime 2.21%
current 1.52%
black 1.52%
the 1.24%
only 1.11%
democratic + n. >>共 530
candidate 5.81%
leader 5.70%
reform 4.34%
nomination 3.09%
senator 2.47%
primary 2.37%
nominee 1.81%
election 1.49%
lawmaker 1.42%
president 1.42%
incumbent 0.85%
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