What is it called when a popular presidential candidate generates additional support for legislative candidates and helps them gain office?

Question

Quizplus · Accepted Answer

This is known as the coattail effect, where a popular candidate at the top of the ticket can help to “carry” lesser-known candidates from the same party to victory in other elections. This is because voters will often simply vote straight down the party line, supporting candidates from the same political party as their preferred presidential choice.

What Is It Called When a Popular Presidential Candidate Generates