Senate revelations and byelections on Wednesdays with Kady

New documents show that Prime Minister Stephen Harper's former chief of staff, Nigel Wright, is being investigated for bribery, fraud and breach of trust along with Senator Mike Duffy, in an RCMP probe that has expanded to include the Prime Minister's Office.

And don't forget, there's less than a week of campaigning left before voters in four federal ridings head to the polls on Monday.

The high-profile battle between Liberal Chrystia Freeland and the NDP's Linda McQuaig in Toronto Centre has been getting attention well beyond the riding's boundaries.

Those same two parties are also involved in an intense battle in Bourassa, Liberal Denis Coderre's former riding.

The Opposition leaders certainly seem to sense they have an opportunity to win a previously Conservative-held seat in Manitoba's Brandon-Souris.

In the Manitoba riding of Provencher, candidates are vying to replace former cabinet minister Vic Toews.

Kady O'Malley took your questions and comments about the new Senate revelationsand the four contests. Read a recap of the chat below.

Mobile users can read the liveblogrecap here.