I am curious: Why would you announce that you plan to block all of the next President's Supreme Court nominees BEFORE the election? Doesn't this seem like it could hurt your chances of maintaining a Senate majority?

Or have they given up on that already and are just trying to appeal to their bases in their own reelections? Who benefits from announcing these plans? Are the Senators who announced this idea so far into senility they can't see it would be better to NOT announce them?

Or is this some sort of alternate reality fantasy? Game theory assumes rational opponents. So what is really happening here?