On Tuesday, voters in Crook County passed measure 7-86, which asked voters if they support negotiations to move the Oregon/Idaho border to include Crook County in Idaho. The measure is passing with 53% of the vote, and makes Crook County the 13th county in eastern Oregon to pass a Greater Idaho measure.
a shift of ~ 240k people from oregon to idaho would result in oregon going back down to 5 congressional districts, and idaho gaining one for three. so one electoral vote moves from a reliably-democratic state to a republican one. that one elector could very well swing a presidential election.
iirc, changes to state boundaries requires approval of both states and congress (and also the president, who would have to sign-off on the legislation passed there). oregon would never go for it–not entirely sure idaho would be on-board, either, even with the thought of gaining a congressional seat. providing state services and funding to that region would be a perpetual net-drain on idaho’s economy.