Final answer:
Immigration was not a major factor in causing voters to switch parties in the late 1940s, unlike civil rights, attitudes toward communism, and support for unions that played significant roles in party realignment.
Explanation:
Immigration was not an issue that caused voters to switch parties in the late 1940s. In the late 1950s and early 1960s, social issues like civil rights, attitudes toward communism, and support for unions played significant roles in party realignment. These factors led to shifts in allegiances, particularly among Southern Democrats moving towards the Republican Party due to ideological differences.
Learn more about Factors influencing party realignment here:
https://brainly.com/question/30116861
