Vice President Kamala Harris’ vow to gut the Senate’s filibuster rule to pass a bill codifying abortion rights has cost her an endorsement from a leading Senate moderate: Joe Manchin. The West Virginia independent, one of the staunchest defenders of the potent delay tactic in the Senate, told CNN on Tuesday that he wouldn’t back her candidacy now — despite signaling earlier this month he was getting ready to do so. Learn more about your ad choices. Visit podcastchoices.com/adchoices