Bozeman, Montana.Jacob Boomsma/ShutterstockThe Montana US Senate race is set to be one of the most competitive races in the country.Now there's a new layer to the race: recent transplants who could sway the election.An influx of new residents has driven up home prices and shined a light on housing affordability.Montana's US Senate race is shaping up to be one of the marquee races of 2024 as three-term Democrat Jon Tester hopes to fend off an aggressive challenge from his likely GOP opponent, Tim Sheehy.The contest has huge national implications.