Tom Perez, the former Labor secretary for President Barack Obama, was elected as the Democratic National Committee’s new chairman on Saturday, replacing interim chair Donna Brazile after a rollicking four-month race and a chaotic final day of voting. Party members landed on a decision on who should be in charge of Democrats’ official party apparatus after two rounds of balloting. With 218 votes necessary to win, the final tally was 235 votes for Perez and 200 votes for Minnesota Rep. Keith Ellison. The former Labor secretary immediately moved to unify the party by naming Keith Ellison as his deputy chairman.