U.S. Senator Michael Bennet---who will apparently face a long, tough battle for reelection, including a challenge from fellow Democrat Andrew Romanoff---has made a big change in his office, replacing Jeff Lane, his chief of staff, with Guy Cecil, a top political operative who served as the director of Hillary Clinton's presidential campaign. "Guy's strong work ethic, leadership abilities, and strategic thinking will be a real asset," Bennet (pictured) says in a statement to The Denver Post [2]. State Republican Party chairman Dick Wadhams claims the move illustrates that Bennet's office is in "disarray." The Washington Post [3] writes that Bennet is "among the most endangered Senators up for re-election in 2010." Meanwhile, former Lieutenant Governor Jane Norton has raised more than $500,000 in her bid to out-do fellow Republicans for a shot at facing Bennet, according to Congressional Quarterly [4]. It seems certain, writes CQ, that Norton will be the best-funded GOP candidate in a slate of lesser-known candidates, such as Ken Buck, Weld County district attorney, and Ryan Frazier, an Aurora city councilman.