Final thought: Biden's struggles didn't seem to cause trouble for Democrats
I think it’s fair to say that we’re in uncharted territory in the world of modern-day elections. There are two possible options that account for Democrats’ success tonight: One, the races that took place were so localized and dependent on individual candidates that it’s no reflection at all of the national political environment, since voters regularly differentiate between state and federal elections. The other possibility is that voters are disentangling the presidency from their political preferences writ large, and the Democratic Party hasn’t taken a hit even though its standard-bearer, President Joe Biden, has an average approval rating below 40 percent: “Tonight feels a lot like 2022, when Democrats won in spite of Biden, not because of him. In 2024, we'll see if Biden can win in spite of Biden.”
—Leah Askarinam, 538