What effect did the growth of the Populist Party have on the two major political parties of the time?

The most dramatic impact was in North Carolina, where the poor white farmers who comprised the Populist party formed a working coalition with the Republican Party, then largely controlled by blacks in the low country, and poor whites in the mountain districts.

the difference is that white collar worker performs skills like worker as a scientist or well blue collars do physical work and they do services like being a cook.