Charter school campaign claims to have surpassed signature threshold

STATE HOUSE — On the eve of a high-stakes Senate caucus, activists planning to put a charter school expansion question before voters in November 2016 say they've already compiled more than 100,000 signatures, three weeks before those signatures are due to be presented to local offices for certification. The coalition behind the ballot question also touted a nearly four-month-old poll of 600 likely Massachusetts voters commissioned by a member of the coalition that found 63 percent in favor of a

STATE HOUSE — On the eve of a high-stakes Senate caucus, activists planning to put a charter school expansion question before voters in November 2016 say they've already compiled more than 100,000 signatures, three weeks before those signatures are due to be presented to local offices for certification. The coalition behind the ballot question also touted a nearly four-month-old poll of 600 likely Massachusetts voters commissioned by a member of the coalition that found 63 percent in favor of a…