Four candidates are seeking three seats on the Somerville City Council in the May 4 election, and three of them offered comments in the Burleson County Tribune’s candidate forum.Incumbent Jeff Schoppe is running for re-election to his seat, and three other candidates -- Mark Sager, Laura Hoover and Jerri Negrete -- are running.Incumbents Amanda Flencher and Deona Moses are not seeking reelection…