He resigned from the Conservative caucus on March 31, 2015, claiming on his blog, "the realm of politics at senior levels" have become hostile to "a Christian world-view", and completed his term in parliament as an Independent MP.
[3] He had earlier announced that he would not be standing in the 2015 federal election scheduled for the fall as his constituency is being eliminated due to redistribution.
In the 2004 general election, Lunney won with 39.06 percent of the vote over NDP candidate Scott Fraser.
The case went to the BC Supreme Court where the presiding judge, Justice Douglas Halfyard exonerated Lunney ruling that the use of the title "Dr." did not "infringe any legal or equitable right" of the petitioner, Robert Pound.
"[10] On June 29, 2010, Lunney called upon Health Canada to tighten controls on "over-prescribed" proton pump inhibitors, which suppress stomach acids but have been shown to increase the likelihood of Clostridioides difficile colitis, an intestinal disease with flu-like symptoms.
Lunney said, "It has proven difficult to eradicate but much of its spread and related death toll could be prevented, if patients were made aware of the risks when doctors prescribe PPI medication.
In his defence, Lunney stated that despite the trip being long, he returns to his riding at "every chance I get" to attend events and meet with constituents.