This question is incomplete. Here's the complete question.
Read The Electoral College Explained, By Allyson Waller.
Why does having an Electoral College that determines the winner of a presidential election, rather than a popular vote, lead to "an
intense focus on key battleground states," according to Ms. Waller?
Answer:
The Electoral College is a group of electors elected by the state’s political parties. The key battleground states are those considered swing states, meaning that they usually have close contests between political parties in presidential elections.
Step-by-step explanation:
This leads candidates to focus their campaigns on the states most likely get them the required votes.