A woman who waited 90-years to see a female US president has died after casting her vote for Hillary Clinton.

Anita Harris, who used a postal vote to back the Democrat candidate, "died a happy women" after being able to vote for a female presidential candidate, her son said.

Scott Harris wrote on a private Facebook group: "My mom. Voting for HRC. She waited 90 years. She passed away last night. She'll be cheering from above Tuesday nite."

He has since had thousands of messages of support and condolences from people on the social media network, The Telegraph reported.

Harris said: "What is amazing is that human kindness still exists within this contentious election. It reminds me of people stopping and taking off a hat as a funeral procession passed by. Honouring a complete stranger. Just shows, Love Trumps Hate."

If elected, Clinton will become the first female president of the US, with rumours early in her campaign she could run on an all-female ticket with senator Elizabeth Warren as a VP running mate.

She Voted For Clinton And Then Died A Happy Woman, Says Son ‘Mom will be cheering from above on Election Day.’The...

Posted by Canada United with Israel - CUWI on Friday, November 4, 2016

Following the outpouring of support from Facebook users, Harris wrote on social media: "To everyone who has taken a moment to send condolences on my mum's passing after her vote: My family is intimately involved in the HRC campaign. We are spread out over the nation with family and friends. I cannot express how my family is overwhelmed by the responses. We are utterly shocked that you all have taken time to simply make a condolence.

"Mum was a 'Roosevelt Dem' as she would say. And damn proud of it. You all have eased the broken hearts of a family and given mum the greatest gift of going viral with her simple statement. Thank you all. Onward and upward!"