Hillary Rodham Clinton, who ran for the presidency with the aura of inevitability, faces the reality of being one of 100. For the first time since she was elected to the Senate in 2000, the former first lady is no longer the candidate with the best shot of capturing the 2008 Democratic presidential nomination. That title belongs to someone else. She's still simply the junior senator from New York with no committee chairmanship, the coin of the realm bestowed by seniority. At least for a while. As she walks the familiar marble halls of Congress, from news conferences to committee...