Unless all the states east of New York switch, this is a non-starter.
To a lesser extent, south-western Vermont is economically linked to the Albany metro area, and would also likely vote against a shift.
Were you to poll on support for moving New England over to Atlantic time, I'd bet you'd wind up with a map closely matching that of local support for the Boston Red Sox vs New York Yankees: https://www.nytimes.com/interactive/2014/04/23/upshot/24-ups...