In 2012, voters across the region liked what they saw in Barack Obama. The president won the popular vote in 24 of the 25 towns in New London County in his bid for re-election, mirroring the support he got in Connecticut and across the country. Four years later, four of those towns had had enough. In Ledyard, Montville, North Stonington and Salem, turnout went up, support for Democrats went down and Donald Trump won hundreds more votes in each town than both Mitt Romney in 2012 and Trump's rival in 2016, Democratic nominee Hillary Clinton. They're not alone — 40...