As a long-time graphic designer and art director, I like the Biden Harris logo design for 2020. The three lines of the letter E is a patriotic symbol of the red stripes of the US flag. The stripes follow the curve of the D before it which is a clean and modern design touch, and the red color stands out against the Democratic Party blue of the logo. The Decimal type font is a progressive-looking sans serif appropriate for this modern time period (2020) and a wink to Obama's logo font (Gotham) designed by the same foundry, Hoefler & Co. Furthermore, since these names are almost balanced, they both get equal billing in the logo, with BIDEN just a little bigger which is appropriate for the POTUS position he is seeking.