Reuters) - Supporters of Republican presidential candidate Mitt Romney are scouting an unlikely path to the White House through the vast forests and blueberry barrens of northern Maine. President Barack Obama is expected to win the Pine Tree State easily in the November 6 election. Regardless, Romney allies are buying TV time with the hope of carrying the state's thinly populated interior and scraping out one electoral college vote in Maine that could edge their man closer to the 270 needed to win the White House. With polls showing a dead heat nationally, Republicans in the state are focusing their...