People's feelings about the economy is the strangest predictor of change in modern American politics. And right now people are pissed and the GOP's greatest politcal.weakness right now is that they have too much power. It's harder to put the blame on the Dems when the GOP has absolute control over all 3 branches of government.
Honestly, the Dem's inability to put together a filibuster due to Fetterman may be a secret advantage.