The real impact of Nigel Wright's testimony in the Duffy trial

In November of 2013, Stephen Harper faced a grilling in the House over three seemingly simple words: "good to go."

They were in an email, written by the Prime Minister's then-chief of staff, Nigel Wright.

But were they proof that the PM had signed off on a plan? A plan that saw Wright hand Mike Duffy a cheque for $90,000, paying off the Senator's questionable expenses?

Harper has always said he knew nothing about the payment, and an RCMP investigation supports him. But the questions are back again this week as Senator Duffy's trial resumes today.

After months of investigations and allegations, the man who has been silent so far — Nigel Wright — is expected to take the stand and testify at last.

We were joined by three guests to learn more about how the testimony could play out:

• Jennifer Ditchburn, senior parliamentary correspondent for the Canadian Press
• Paul Calandra, former Parliamentary Secretary for the Prime Minister in the last Parliament and Conservative candidate in Ontario
• Campbell Clark, chief political writer for the Globe and Mail

How interested are you in the Duffy trial and hearing from Nigel Wright? Will it influence your vote? Let us know on Twitter @TheCurrentCBC, Facebook, or via email.

This segment was produced by The Current's Sarah Grant, Max Paris, and Leif Zapf-Gilje.