To be a progressive, then, means being a partisan-at least for now. The only way a progressive agenda can be enacted is if Democrats have both the presidency and a large enough majority in Congress to overcome Republican opposition. And achieving that kind of political preponderance will require leadership that makes opponents of the progressive agenda pay a political price for their obstructionism-leadership that, like FDR, welcomes the hatred of the interest groups trying to prevent us from making our society better.