During the 94th General Assembly, Patterson served on the following committees: Appropriations-Public Safety; Computer Technology; Electric Utility Oversight; Housing and Urban Development.[2] During the 95th General Assembly, Patterson served as the Vice Chair of the Committee on Computer Technology.[5]
After suffering a stroke, Patterson chose to retire and was succeeded by fellow Democrat Andre Thapedi.[6] On January 9, 2009, Patterson was the lone House vote (114–1) against impeaching Governor Rod Blagojevich on corruption charges and committing abuses of power. In the roll call, Patterson said he didn't feel it was his job to vote to impeach the governor. He declined to comment on whether he approved of Blagojevich's performance. Patterson defended his vote against impeachment by stating that "I have no firsthand knowledge of any of the evidence," "I went by my own gut feeling, as simple as that,"[7] and also that "I read the report. If the government is going to indict him, let them go ahead and do that. That's their job and I'm doing my job."
[8]