MPR’s Brian Bakst reports on efforts by 1st District Congressman Tim Walz to refocus his gubernatorial campaign. Walz spent much of this year as the DFL favorite for governor, had the most money, topped a precinct caucus straw poll, and honed a message toward winning back moderate voters who have fallen away from the party. Then came a state convention that turned out poorly for Walz, and a new entrant in the race who threatens to cut into his primary election base.