“She turned his egomaniacal tendencies into a liability,” Wien said.

Mike Vegessi, 63, skipper of the Lazy Bones excursion boat, which runs half-day fishing jaunts out of Montauk on Long Island’s eastern tip, said that he’s been “willing to overlook all Trump’s faults because I’m sick and tired of establishment politics,” which he says are dependent upon wealthy donors.

2016 Campaign’s One Sure Thing Is Rising Tide of Cash: QuickTake

One measure of the competing points of view could be found in stores selling merchandise indicating support for the candidates. At the Fudge Factory on Southampton’s Main Street, owner John Johner kept a tally of chocolate bars wrapped in likenesses of Clinton and Trump until someone paid $300 for all his 100 remaining Trump bars.

East Hampton’s Monogram Shop has been selling plastic cocktail cups emblazoned with Trump and Clinton logos at $3 apiece. At 5:07 p.m. Saturday, Clinton cups were sold out after the store moved 1,706 of them, according to its red, white and blue hand-lettered sign. It had sold 1,598 for Trump.

Brooke Neidich, a New York philanthropist and jewelry designer married to Daniel Neidich, former managing director for real estate at Goldman Sachs Group Inc., has spent summers at their home on Georgica Pond in Wainscott for years. It hurts, she said, when someone speaks ill of the part-timers.

“My children grew up playing with the year-round kids,” she said at a party she hosted for the Whitney Museum of American Art. “I want affordable housing for the people who work here. My husband votes here.” And of Clinton she said, “This woman has been fighting for us, for children, for education forever.”

Meanwhile, on the manicured lawn at the Amagansett home of Andy Sabin, 69, a Republican who owns Sabin Metal Corp., the largest independently owned precious metal refiner in the U.S., are two signs reading, “Hillary for Prison 2016.”

“People drive by and give me the thumbs up,” Sabin said. “Hillary would associate with a rat if it would give her money.”

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