What does it refer to in the passage? Does it refer to U.S. electoral college?
States that are teetering between parties are called "swing states." In the past four election cycles, Ohio and Florida have been swing states, twice providing electoral votes for a Democratic candidate, and twice providing electoral votes for a Republican candidate. Think about it. Do you live in a safe state? If so, is it a Democratic or Republican safe state? Do you live in a swing state? Are your neighboring states swing or safe? Is the population in your state increasing or decreasing? And do not forget, when you are watching the electoral returns on election night every four years and the big map of the United States is on the screen, know that the magic number is 270 and start adding.