In the Worcester and Middlesex District, incumbent state Sen. Dean A. Tran, R- Fitchburg, is being challenged by political newcomer John J. Cronin, a Democrat from Lunenburg.Tran, 44, won his seat in a special election in December 2017 and kept it in a regular election in November 2018.The district encompasses the cities of Fitchburg, Leominster and Gardner, as well as the towns of Berlin, Bolton, Lancaster, Lunenburg, Sterling and Westminster, plus Precincts 1 and 2 in Clinton. […]