Massachusetts residents would overwhelmingly oppose a 15-cent increase in the gas tax to help pay for transportation needs, according to the partial results of a poll obtained by the News Service and conducted for a coalition that supports raising the income tax to invest in cities and towns. The poll, conducted by veteran Boston pollster Tom Kiley for the Campaign for Our Communities, showed 83 percent of Massachusetts residents would disapprove of a proposal to hike the gas tax to 36 cents per gallon, including 68 percent who “strongly disapprove.” A total of 17 percent of respondents said they would...