More Milton School District voters appear interested in next month’s almost 70 million building referendum than last November’s failed $87 million attempt. Dozens packed the high school library Wednesday night for an information open house, compared to fewer than 20 for a similar event last year. Some in attendance say they rejected last year’s referendum because it was too broad and uncertain. But now they have an open mind thanks to reduced costs and more concrete ideas for how to use the money. The referendum will be the only item on the ballot.