Had the democrat party NOT put dark corporate hands on the scales in primary races.
Sabotaging the ability of AOC/Bernie Sanders types across the board including letting folks like Nancy Pelosi and Chuck Schumer to get primaied out by Bernie/AOC type, then it would have been a blue tsunami and not a dead even gridlock.
The democrats could have passed a resolution baning the dark money in primary races that they fight against in the general elections. They don't. They use that dark money to control who gets nominated.