Candidates in the Sept. 12 Democratic primary election for Hudson Common Council President, Tom DePietro and Steve Dunn, will hold a 90-minute debate. Hosted by the Register-Star, the Columbia County Chamber of Commerce, and the Hudson City Democrats; the moderator will be Lynn Sloneker, WGXC Station Manager and Managing News Editor. The candidates will hold an informal conversation with the moderator for 30 minutes, then answer questions posed by audience members during the final hour.