It’s also completely impossible. A campaign that could convince two thirds of Biden voters to switch would shatter every record for a grassroots campaign (heck, even a corporate backed campaign) that had ever been set, by orders of magnitude. You are not going to convince a statistically significant number of people to switch their vote, especially not between now and November.
You’re the one that made this ridiculous argument in the first place. I am expressing democracy by supporting and growing the party I agree with the most.
You’re the reason Trump is winning, because you refused to criticize Biden and the Dems, and not grow another party as an option.