ions of the House when the Speaker is not in the chair. The Deputy Speaker also chairs the House when it sits as a Committee of the Whole. Other presiding officers, the Deputy Chair of Committees and the Assistant Deputy Chair of Committees, are chosen each session to occupy the chair when the Speaker and Deputy Speaker are not available. The Deputy speaker and the other presiding officers are members of the Panel of Chairs, and can therefore be selected by the Speaker to chair legislative committees. Like the Speaker, the Deputy Speaker has a role in administering the House.
See this post for an overview of the role of the Speaker. For anyone interested in watching the election of the Speaker, it will be broadcast on CPAC in Canada (check your local listings), and livestreamed on the CPAC website (possibly subject to regional restrictions -viewers outside of Canada might be unable to view this feed). Proceedings of the House of Commons are also available for viewing online on ParlVu.