With former Vice President Joe Biden fresh off a weak fourth-place showing in the Iowa caucuses and a disastrous debate performance, moderate Democrats are shopping for a new candidate, and the polling shows they’re ascendant.

But Democrats’ best bet to stop Vermont Sen. Bernie Sanders with a moderate option is not Pete Buttigieg, who just won the Iowa caucuses and very well may win New Hampshire, and it’s not Michael Bloomberg, whose Super Tuesday spending has catapulted him to the double-digits nationally. It’s Minnesota Sen. Amy Klobuchar, the only other real moderate who can win.