A Democratic senator thinks the 24-hour Senate-floor speechifying against President Trump’s nomination to lead the Department of Education won’t end up bearing fruit.

Sen. Chris Murphy, D-Conn., said on CNN Tuesday that the effort to speak through the night against Betsy DeVos is “unlikely” to lead to one more Republican senator breaking ranks to tank her nomination. It appears the Senate is split 50-50 on DeVos’s nomination, and Vice President Mike Pence is expected to break the tie on Tuesday.