[2] Blaney was an active member of Réseau Environnement,[citation needed] Canada's largest group of environmental professionals; he presided over the organization's Québec-Chaudière-Appalaches chapter between 2003 and 2006.

[1] Blaney entered politics during the Quebec general elections of 1998; he was a candidate of the Action démocratique du Québec in the provincial electoral district of Beauce-Nord.

Blaney arrived in third place, behind Normand Poulin (PLQ) and Gaston Gourde (PQ), collecting 14.42% of the votes.

[3] Following many years of activity with the Conservative Party in Quebec, Blaney decided to run for the first time for a seat at the House of Commons during the 2006 federal elections in the riding of Lévis-Bellechasse.

[7] In January 2006, Blaney visited Canadian soldiers in Kandahar as part of a trip organized by the Standing Committee on National Defence for its members.

He also launched the Helmet to Hardhats Program which assists many former Canadian Forces members to find well-paid jobs in the construction sector.

The slogan was used by the government of Maurice Duplessis in the mid-20th century during the period of church-state collaboration in Quebec known as the Grande Noirceur[12] and even before in the 1850s.

On August 13, 2013, in response to a brief from Dennis Edney arguing that Omar Khadr should be held in a youth facility not an adult prison, because he was a minor when the crimes he was convicted of occurred, Blaney asserted that the Harper government would fight to keep Khadr in adult prisoner for the full term of his sentence.

The Bill has 6 key elements, namely: Notably, during the debate on this legislation, Blaney said “the important point that often seems to be forgotten around this place, that it is the jihadis who represent a threat, not our police officers and those protecting us”.

On October 14, 2016, Blaney announced that he was running for the leadership of the Conservative Party of Canada,[16] though he eventually lost to Andrew Scheer.