Today, Ezra Klein said in the New York Times that Biden should be convinced to step aside and that the Democratic Party should pick a different nominee at the convention in August.

I think the democratic party establishment's Overton Window could be considered to centered around what Ezra Klein says in the New York Times, so to me this is very significant.

This market resolves Yes if Ezra Klein changes his mind and publicly says he thinks that Biden should be the nominee, before August 1st. Otherwise, this market resolves No.