Rezko and Levine also allegedly schemed to split a $1 million bribe from a contractor who wanted state approval for construction of a hospital.
Rezko is charged with using his political influence with Blagojevich's administration to launch both of the alleged schemes.
The trial has been closely watched in the political world because Rezko has been a key fundraiser for Gov. Rod Blagojevich and Sen. Barack Obama. Neither of the officials is accused of any wrongdoing in the case.
Levine was known to have engaged in extensive drug use, but his testimony Monday cast a harsh light and provided fresh details of his history.
He testified that he would regularly withdraw cash from the bank for drugs and other expenses and estimated that between 2000 and early 2004 his withdrawals totaled "in excess of $1 million."
One subject that didn't come up was exactly who his friends at these parties were. He did say that all of them were male.
But U.S. District Judge Amy J. St. Eve has barred any testimony concerning Levine's "personal social life," which she said would be too prejudicial if presented to the jury. Defense attorneys have described it as Levine's "secret life."
On another topic, Levine testified that Springfield millionaire businessman William Cellini told him that Rezko was getting a lot of pressure to find a way for Blagojevich's father-in-law, Chicago Alderman Richard Mell, "to make money."
Levine quoted Cellini as saying that if they could help Rezko "solve this problem it would greatly ingratiate them with Mr. Kelly and Mr. Rezko." Christopher Kelly was another key fundraiser for Blagojevich.
"Mr. Kelly and Mr. Rezko were very powerful in the Blagojevich administration," Levine testified. "They had the power to appoint people to boards and that was very important to Mr. Cellini and me," he said.
Levine testified that he hit on a scheme under which businessman Sheldon Pekin, who was trying to land business with the pension board for several investment funds, would share a $375,000 finders fee with Mell.
Levine said Cellini told him there was some initial interest in the idea and Pekin was agreeable but he said Rezko later said that Mell was not to get the money. Pekin told a similar story earlier on the stand.
Mell has said that he knew nothing about any such scheme.
Levine testified that he and Cellini hatched a scheme soon after Blagojevich took office to kill a plan to consolidate three state pension funds under a single board. The plan, championed by Blagojevich budget director John Filan, would have hurt a small group of insiders who had long been controlling the teachers pension fund, Levine testified.
Levine, then a board member, said Cellini proposed to contact Rezko and Kelly and get them to use their influence to kill the plan. He said that in turn he and Cellini would use their influence to give money management firms recommended by Kelly and Rezko preferred treatment.
Levine also testified that when the small coterie of insiders who controlled the fund were in danger of losing their majority on the board in May 2004, Rezko installed two loyal board members willing to vote as their were told on key issues.
Neither Kelly nor Cellini are charged in the case.
The Associated Press contributed to this report.