siyo#1 cause of loss is inflation. despite powell's seemingly successful soft landing towards the end of biden's term, inflation was on an exorbitant rise for the majority of biden's term. when the working class are hurting, they'll vote the other way. character assassination of the other candidate can't be done when working class americans are more concerned with how far they can stretch the paycheck.
though i think in this regard americans are short sighted, given that biden came into the presidency in the early and most deadliest stages of the pandemic fueled on top of a stimulus package from the trump presidency
but not even that, with housing and real estate gone up and being eaten away by private corporations, there's a ton of things americans have to be angry about in that regard
This exact same thing has happened in Canada as well. I don't think Trudeau has a chance next election lol