Dead cat bounce-temporary recovery from a prolonged decline: https://www.investopedia.com/terms/d/deadcatbounce.asp
Maybe Q is saying the Democrats have been experiencing a dead cat bounce, with their “momentum”. That or the stock market. Doubt he would be talking about the stock market here though even though he uses a market term here. So I believe he is talking about the Democrats and their wins in Virginia and Alabama, control of the narrative and push for gun control.