I'm not even sure what "left" and "right" means in these contexts. To me anything that I would call the progressive left has 0% influence on the Democrats. Biden/Pelosi/Schumer haven't even put forward even the most basic left leaning proposals nevermind enacted them. For example: no 15$ minimum wage, no attempt to control drug prices, no medicare-for-all or affordable care act expansion, I can go on and on. What priority of say the 25% most leftwing voters has been implemented or even put forward? It seems like it is all centrist corporate stuff that rules the day in the Biden administration (unsurprisingly).