It was a busy week-and-a-half at the criminal trial for Mike Duffy, with Stephen Harper's former right-hand man on the stand for a number of politically juicy revelations that could impact the Conservative Party's election campaign.

Nigel Wright, Harper's former chief of staff, took the stand for six days of testimony at an Ottawa courthouse, where Duffy is on trial for 31 criminal charges, including bribery, fraud and breach of trust. Duffy has pleaded not guilty to all charges, including those stemming from a secret $90,000 payment he received from Wright to cover his questionable Senate expenses in 2013.

Here are some of the questions, answers and highlights to come out of an eventful week-and-a-half in court.

Mike Duffy is feeling pretty good

Embattled Sen. Mike Duffy has been surprisingly relaxed since Wright's testimony began. He's stayed mostly quiet through the trial, but he's delivered a few amusing moments outside the courthouse.

On Wednesday, for instance, Duffy was forced to wait at the curb outside the courthouse for his ride to come pick him up. With several cameras and smartphones in his face, he called his wife on his cell and asked her to come get him. "I'm standing here with my friends," he told her, before giving a chuckle.

Last week, Duffy even stopped to address one of the questions hurled his way by reporters outside the Ottawa courthouse.

"You seem to be in a good mood today, Mr. Duffy," one reporter said.

"I'm always in a good mood," he answered, before entering the courthouse for the trial on Friday.

CTV legal analyst Boris Bytensky said Duffy appears to be quite positive in court.

"Mike Duffy is sitting back, smiling and enjoying it,"

Nigel Wright knows how to stay cool

Star witness Nigel Wright held up well under several days of cross-examination from Duffy's lawyer, Donald Bayne. Wright had some heated exchanges with Bayne, but his testimony was consistent, with no big reveals or shocking about-faces.

"He kept his composure, he answered the questions and he stuck to his message throughout," Bytensky said. He added that Wright "never wavered" from telling his side of the story in court. "There were clearly some uncomfortable moments but there were no direct hits on him, other than what was to be expected."

Wright had an answer for all the big questions raised by long email chains submitted into evidence, including those suggesting that Harper was aware of his "personal" involvement in resolving the case. Wright said Harper only knew Wright was personally involved in convincing Duffy to repay the money.

Duffy's lawyer wants the spotlight on Harper, PMO

The court saw some fireworks during Wednesday's testimony, when one of the Crown prosecutors accused Bayne of asking "politically motivated" questions of Nigel Wright. The accusation came after days of Wright facing questions about the control the PMO exerted over many senators, including Duffy.

"This has become a public inquiry about the Prime Minister's Office and, to an extent, Stephen Harper," Bytensky said.

He said Bayne has delivered a lot of "great theatre" in cross-examining Wright, but he hasn't done a lot to help his client's case. He said Bayne had about 10 minutes of "excellent" questioning at the beginning and end of the cross-examination, but the four-and-a-half days in between have been more politically damaging to the Conservatives than helpful to Duffy.

"He certainly made a lot of news," Bytensky said. "I'm not sure he made a lot headway into helping Mike Duffy with his defence."

Bayne submitted a number of email threads into evidence that highlight the controlling, circle-the-wagons mentality of the PMO under Nigel Wright. Those emails have raised a number of questions about which PMO staffers knew about Wright's $90,000 cheque (and when they knew about it), but Bytensky said those questions aren't that relevant to the case.

"It's a red herring for the trial, but it's very significant鈥� on the political campaign, because the question keeps coming up," Bytensky said.

Stephen Harper sticks to his talking points

Conservative Leader Stephen Harper has faced the same questions from the media on every stop of his election campaign this week: How did he not know what his closest aides were doing with the Duffy repayment scheme? And what role did Ray Novak, Harper's current chief of staff, play in the scandal that got his predecessor fired?

Harper has been adamant in asserting that Duffy and Wright were the only individuals responsible in the case, and they are being held accountable. However, he has refused to address the questions surrounding Novak, saying instead that the matter is "before the court" and it is not his place to comment. He has not spoken Novak's name in any of his answers, and Novak has suddenly vanished from the public eye since he started coming up in Wright's testimony. Prior to that testimony, Novak was a key member of Harper's re-election campaign.

More questions for the PMO

It's unclear at this point whether Novak will be called to the stand, but Harper's former lawyer, Benjamin Perrin, began testifying on Thursday. Perrin was the PMO lawyer spearheading negotiations with Duffy on the repayment deal.

Bytensky said Perrin will likely face many of the same questions Wright dealt with during his cross-examination, including questions about Novak. Perrin told the RCMP in a statement that Novak was present for a March 2013 conference call discussing Wright's $90,000 payment. However, Wright insisted earlier this week that Novak was not in the room for that call.

"He apparently will say that Ray Novak, who is now the prime minister's chief of staff, was aware of the $90,000 cheque," Bytensky said. "That raises political hot potatoes for the Conservatives."

Novak is expected to be a prominent figure in Perrin's testimony.