Two or more Massachusetts candidate committees or political party committees may jointly make expenditures including, but not necessarily limited to, expenditures for a joint fundraising event in accordance with 970 CMR 2.12, or the purchase of campaign materials, media services or political flyers for a joint campaign event. The expenditures defined in 970 CMR 2.11, as well as any expenditure which is similar to the following and not inconsistent with M.G.L. c. 55 and 970 CMR, shall be permitted:
Campaign Material means any materials used in political campaigns including, but not limited to, buttons, bumper stickers, signs, balloons, hats, or T-shirts.
Media Services means a media service including, but not limited to, advertisements or announcements in newspapers, radio, broadcast or cable television, video, or billboards.
Political Flyer means any written material used in political campaigns including, but not limited to, a flyer, pamphlet, booklet, brochure, or slate card prepared by a candidate or political committee.
970 CMR, § 2.11