Swing states in U.S. elections are states where both major political parties have similar levels of support among voters, making them crucial battlegrounds. Elections in these states are typically highly competitive and can swing either way, significantly impacting the overall outcome of presidential elections. Candidates often focus campaign efforts on swing states, tailoring messages and resources to win the votes of undecided or independent voters. Due to their unpredictable nature, swing states are essential for understanding electoral dynamics and strategizing for winning elections in the United States.