11.   Those frictions still may be a factor when the two black Democratic incumbents face white Republican challengers this fall.

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%
black + n. >>共 1162
man 5.48%
woman 2.92%
smoke 2.64%
people 2.22%
community 1.99%
student 1.73%
voter 1.67%
leader 1.60%
leather 1.44%
hair 1.14%
incumbent 0.04%
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