Very good write up. I will add that bc the dems have a majority (but not supermajority) in congress they can still pass bills through both houses and force trump to veto them. For example, if they push through a bill to reverse the cuts to medicaid then trump is forced to either sign it or veto it, which would be deeply unpopular with his base

Every popular policy that they force trump to veto is a signal to the voters that trump and the republicans are the ones standing in the way of improving our material conditions and if the dems had either a super majority, a dem president, or both then these changes could happen. This would make things swing even more blue in 2028

Of course historically the dems get control and then do nothing or maybe the bare minimum, but the difference this election cycle is that we have openly socialist candidates winning and progressive candidates beating corporate dems. These newcomers are more likely than the establishment democrats to actually get things done. Although its still our job as their constituents to make our voices heard and make them know they have to do their job