I don't mean to sound like a broken record here with Puerto Rico, but seriously, we just saw the first step toward a 51st state. It's a "piss or get off the pot" referendum, statehood or independence. Statehood is leading right now. The government can't be forced to act, but surely Democrats will want to get behind this to improve their position for the 2022 midterms and 2024. Why is no one talking about it?
Worth noting that it seems the PR legislature is more likely than not to elect a pro-commonwealth majority (but I am not 100% sure on that). So statehood is by no means a guarantee, even if Dems somehow take the Senate in an upset.