Might explain why they seem to be engaging in not the best electoral map strategy this cycle.
For all the issues with the Democrats, I think most of their problems have been regarding Biden, rather than their actual campaign. They've been smart about where to put campaign resources. They understand the key states and districts. Likewise the key issues.
Trump's campaign conversely has been putting resources into areas that are reaches, rather than securing the battlegrounds. It reminds me a bit of the Hillary Clinton campaign. And Trump picked Vance who doesn't really help outside of the MAGA base.