Can you guess what this button is meant to convey? I couldn't. Told that it's a campaign button for a presidential candidate, I flailed around trying to think of one whose initials were J.O. No luck. Then told (orally) that it says "Jo" I tried to think of a current candidate named Jo, as in Jo March or Jo Grimond. No luck there, either. At "It's Joe Biden, you idiot!" I protested: But Joe Biden spells it with an E at the end. "There is an E!" No there isn't. What, that? That's not an E. (It's also inconspicuous against the blue when set next to the bright white letters.)
And that remains my settled view. At reminding this viewer of Joe Biden, that button is completely incompetent.