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WATCH: Tony Abbott's daughter Frances reveals personal reason she's voting 'yes'

Her father is a high profile critic of same-sex marriage but Frances Abbott says she hopes to one day attend her aunt's same-sex wedding - and that's why she is voting 'yes'.

The daughter of former prime minister Tony Abbott features in a 'Vote Yes' campaign video, released on Tuesday, in which she says marriage equality will make society less lonely for many people.

"I think it's well know that within my family we have people that sit on the other side of the fence," Ms Abbott says in the clip.

Frances Abbott features in a 'yes' campaign ad'. Source: AAP

"My mother and my father raised me to stand up for what I believe in."

Ms Abbott talks about her aunt Christine Forster and how she hopes to be part of her same-sex wedding one day.

Frances Abbott with her family. Source: AAP

"I look at aunty Chris and I don't think she planned to fall in love with Virginia," she said.

"It never really changed anything, she was still aunty Chris.

"She's still going to be at Christmas, she's still going to be at the family BBQs, her children are still going to be my cousins.

Frances Abbott with her aunty Chris, who is a lesbian.

"To see aunty Chris marry Virginia, to do it here in front of friends of family, it would be so special and I'm so, so hoping that's something that I get to be a part of."

Mr Abbott has campaigned heavily against same-sex marriage, and was headbutted in Hobart last week - allegedly by a man wearing 'vote yes' badge.

Ms Forster, a Liberal councillor for the City of Sydney, is campaigning against her brother on the issue.