State Rep. Mike Connolly, a Democrat in the 26th Middlesex District, made up of parts of Cambridge and Somerville, invites residents to bring questions, concerns and policy ideas to office hours scheduled for 5:30 to 7:30 p.m. Sept. 11 in the Lewis Room of the Cambridge Public Library’s Central Square Branch, 45 Pearl St. For details and to RSVP, click here.