Nathan Howard/Getty Images(WASHINGTON) -- West Virginia Democrat Joe Manchin's announcement earlier this month that he won't seek reelection tilted next year's Senate map even further away from Democrats' narrow majority, political analysts say -- and underscored how such a victory hinges on Trump country. Manchin's seat is one of three that his party is defending in states that Donald Trump won over Joe Biden in 2020. By declaring his retirement, the long-serving moderate West Virginian, who had continued to win even as his state continued to become more conservative, drastically lowered his ...