Final answer:
The support of White voters for Nixon and Wallace affected the political allegiance of Black voters by pushing them towards the Democratic Party.
Step-by-step explanation:
The support of White voters for Richard Nixon and George Wallace had a significant impact on the political allegiance of Black voters. Nixon's Southern Strategy, which aimed to win over the states that had supported Wallace in the previous election, further divided electoral politics along racial lines. While Nixon recognized the risk of losing Black voters, he prioritized winning the white Southern vote. This led many Black voters to see the Republican Party as less supportive of civil rights, pushing them towards the Democratic Party.