Newly appointed deputy Conservative party leader Leona Alleslev is taking heat and has apologized for equating marching in Pride parades with St. Patrick's Day parades.

In an interview with CBC Radio's The House, Alleslev was asked about Conservative Leader Andrew's Scheer's struggle to quell questions about his personal beliefs on same-sex marriage during the election campaign.

The Liberals had resurfaced a video from 2005, when Scheer spoke in the House of Commons against it. Scheer is also the only federal party leader who has not marched in a Pride parade.

"I think that that's obviously his choice and we live in a country where that's his choice," Alleslev told host Chris Hall. "Have we asked anybody if they marched in a St. Patrick's Day parade?"

The backlash on social media was fierce after the interview aired, with many criticizing her choice of comparison.

Conservative insiders expressed their distaste for the comment.

Jamie Ellerton, who ran Scheer's road campaign, and Melissa Lantsman, who helped the party during the election, recently wrote a scathing opinion article in the Globe and Mail, warning the Conservatives would be eternally relegated to second place if they couldn't move past their current stance on social issues.

The two retweeted Alleslev's comments. Lantsman wrote "Hope it's all worth it, Leona Alleslev," while Ellerton posted a dozen examples of Scheer attending festivals with various ethnic and religious groups.

This is what basic respect for a community looks like:<br>“while other cultural groups – be they religious, national or ethnic – command that respect without question.” <a href="https://t.co/aPh2QMgiJ9">https://t.co/aPh2QMgiJ9</a> <a href="https://t.co/HGXBtaD8FZ">https://t.co/HGXBtaD8FZ</a> —@jellerton

Rachel Curran, who served as former prime minister Stephen Harper's director of policy, said it was "one of the ugliest and most offensive things I've heard in a long time."

It wasn't just Conservatives weighing in. Liberals and New Democrats poked fun at Alleslev.

"Even if you choose to ignore the baffling analogical reasoning, Trudeau has actually marched in St. Patrick's Day parades..." read a tweet from Liberal MP Nathaniel Erskine-Smith.

NDP MP Charlie Angus added some historical context, saying "150 years ago, it would be fitting to ask a Conservative leader why he refused to march in a St. Patrick's Day parade."

Writer Jesse Hawken added to that point "This comparison would work if there was still widespread and institutional discrimination against the Irish in Canada."

150 years ago, it would be fitting to ask a Conservative leader why he refused to march in a St. Patrick's Day parade.<br>in 2019 Andrew Scheer needs to say why he refuses to celebrate Pride. <a href="https://twitter.com/LeonaAlleslev?ref_src=twsrc%5Etfw">@LeonaAlleslev</a> better hope her party doesn't take 150 years to figure this no-brainer out. <a href="https://t.co/H1xjLpBVAq">https://t.co/H1xjLpBVAq</a> —@CharlieAngusNDP

And the new minister of Indigenous Services cracked a joke.

Top of the morning to you! <a href="https://twitter.com/hashtag/cdnpoli?src=hash&ref_src=twsrc%5Etfw">#cdnpoli</a> <a href="https://t.co/U3JZ4K0aI6">pic.twitter.com/U3JZ4K0aI6</a> —@MarcMillerVM

Alleslev tweeted out an apology on Saturday afternoon.

"I would like to sincerely apologize for a comment I made on CBC's The House. Pride parades represent a wonderful celebration of the LGBTQ community and are an important symbol in the fight for LGBTQ rights," she said.

"I have always stood unequivocally in support of LGBTQ rights and will continue to do so in my role as Deputy Leader and as a parliamentarian. I did not intend to make erroneous and hurtful comparisons — I apologize unreservedly."

Alleslev was appointed deputy leader earlier this week. She was elected in 2015 as a Liberal MP, but crossed the floor to the Conservative side last fall citing issues with the Trudeau government's handling of key files.

Click below to listen to the full interview