Not sure why you're getting downvoted for asking a question that's simple and prompted by the graph visual. Everyone's so focused on talking about why people are unhappy in general, but why did it drop that much between 2023 and 2024 specifically? If it was politics, I'd have expected the drop to come between 2024 and 2025, unless it was the idea of the election itself that caused it. Any other explanation, and why wouldn't it have been the same in 2022-2023?