The right will call anyone other than themselves as whatever they feel like. Biden is just slightly left of center (for the US) and they call him a leftist. Honestly just being a decade plus younger would be massive imo. Not constantly having potential dementia being talked about would be great. Biden has been decent policywise minus Gaza. Policy is good enough for the avg voter looking at status quo>facism. He’s not left enough for a lot of us (e.g. stacking the court) here on lemmy but if you ask the avg person about Biden’s policies I’d bet they’d approve. The trouble for his campaign is that the good stuff isn’t talked about nearly as much as the his age.