It is unclear whether Duffy will get to speak before the votes, expected around 5:30 p.m. ET. CBCNews.ca will cover the votes live — follow the audio feed above and in our live blog.
In "written remarks" emailed to CBC News on Tuesday and dated Nov. 5, Duffy also reveals he is scheduled for heart surgery on Friday, and is once again going against the orders of his doctors by addressing the Senate.
A line in the speech says, "I followed all the rules regarding expenses. I wasn't trying to rip off the government, the Senate or Canadians."
Lamenting the lack of due process, Duffy's written speech finishes, "Witch hunts are bad, our ancestors learned that after the trials in Salem, our parents and grandparents learned it from the slanders of the late Senator Joe McCarthy, my generation learned it from Watergate.
"Please stop this witch hunt and allow the police and the auditors to do their work."
Duffy and fellow Senators Pamela Wallin and Patrick Brazeau are facing a vote that would suspend them from the Senate without pay, linked to inappropriately claimed expenses. Duffy is entitled to participate in the vote.
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