Tonight on The Last Word: Gov. Tim Walz rallies union workers in his first solo campaign event. Also, eight states have abortion rights on the ballot in November. Plus, NBC News projects Trump-endorsed Eric Hovde wins the Wisconsin GOP primary and will face Democratic Sen. Tammy Baldwin. And secretaries of state call on Elon Musk to adopt an election information policy for X users. Rep. Mark Pocan, Dr. Kelly Morrison, Sen. Tammy Baldwin, and Minnesota Secretary of State Steve Simon join Ali Velshi.