Tonight on the Last Word: Sen. Joe Manchin fails to convince a single Republican to vote in favor of the For the People Act, drawing intense scrutiny on the filibuster rule. Also, new polls reveal that a majority of Americans support new infrastructure and police reform bills. Plus, Steve Kornacki analyzes the preliminary results of the New York City Mayoral Primary. And Ethiopia’s historic election is overshadowed by conflict and crisis in its northern region of Tigray. Sen. Jeff Merkley, Sen. Alex Padilla, Jonathan Capehart, David Plouffe and Nick Kristof also join Lawrence O’Donnell.