Democrat Wesley Clark has hired failed candidate Bob Graham`s campaign manager to run his bid for the White House. Paul Johnson was hired by Clark campaign chairman Eli Segal and will start next Monday. Clark has been without a campaign manager since early October, when Donnie Fowler quit the job. Clark`s campaign is based in Little Rock. Johnson is a Minnesota native and a veteran of several Democratic campaigns for the Senate. He also worked on the presidential campaigns of former Nebraska Senator Bob Kerrey in 1992 and Walter Mondale in 1984. Graham, a Florida senator, exited the presidential race last month, saying he couldn`t raise enough money to be competitive. Some Graham staffers went to work for Clark.