I'm sure you mean Mr. Axlerod, his long-time campaign manager:
Obama played hardball in first Chicago campaign
In his first race for office, seeking a state Senate seat on Chicago's gritty South Side in 1996, Obama effectively used election rules to eliminate his Democratic competition.
As a community organizer, he had helped register thousands of voters. But when it came time to run for office, he employed Chicago rules to invalidate the voting petition signatures of three of his challengers.
The move denied each of them, including incumbent Alice Palmer, a longtime Chicago activist, a place on the ballot. It cleared the way for Obama to run unopposed on the Democratic ticket in a heavily Democrat district.
"That was Chicago politics," said John Kass, a veteran Chicago Tribune columnist. "Knock out your opposition, challenge their petitions, destroy your enemy, right? It is how Barack Obama destroyed his enemies back in 1996 that conflicts with his message today. He may have gotten his start registering thousands of voters. But in that first race, he made sure voters had just one choice."