Election authorities have not commented on the widely shared video but insisted there were no serious violations during the Sunday vote.
Mr Erdogan who has ruled Turkey in different capacities since 2003 used an election night speech to lash out at his opponents, singling out the country’s LGBT community.
In his address to supporters outside his Istanbul residence, Mr Erdogan listed several opposition parties, asking the crowd: “Aren’t they pro-LGBT?”
He pledged to stand up for family values while he is in office.
“Family is sacred to us,” Mr Erdogan said.
“No one can slander the family.”
Parents of Turkish LGBT people were visibly rattled by Mr Erdogan’s remarks.
“We watched Erdogan’s statements last night with concern,” Atilla Dirim, a 55-year old writer and father of a transgender woman, told the Telegraph.
“We are very worried. Now as LGBT families we are thinking ‘What can we do to send our children out of this country?’”
Mr Erdogan’s remarks came on heels of years-long crackdown on the LGBT community that went on from holding a 100,000-strong gay pride in central Istanbul in 2014 to getting their gatherings banned altogether.
Mr Dirim said the ruling party has been “demonising” the LGBT community with recurrent hate speech.
“What we do next will be crucial because we want our children to have an equal and dignified life,” the Ankara-based writer said.
“We will continue to fight for our children.”