Answer:
Civil rights and political changes affected how people voted in numerous ways, including polarizing parties more.
Step-by-step explanation:
Civil rights laws were very controversial at the time they were introduced, Vores began leaning less toward people voting based on firmly held beliefs and more along party lines. This led to many fake party affiliated (People of the opposite party running as the opposed party, now known as RINOs and DINOs.) politicians being elected, swinging the meaning of certain parties.