Vogue magazine has endorsed Hillary Clinton for US president, the first time in its 124-year history that it has openly supported a politician.

In an op-ed, the fashion magazine said never before has it spoken in favour of one candidate, although editors have made their opinions known from time to time.

“Given the profound stakes of this one, and the history that stands to be made, we feel that should change,” it read.

Ms Clinton has been profiled six times in the magazine, and Vogue has “enthusiastically” covered her rise from a Yale law student to governor’s wife, to first lady of the US to senator and then secretary of state.

Vogue said it had also featured Donald Trump, his wives and daughter Ivanka several times.

“We understand that Clinton has not always been a perfect candidate, yet her fierce intelligence and considerable experience are reflected in policies and positions that are clear, sound, and hopeful,” the op-ed read.

The article reasoned that Ms Clinton had fought for immigration reform, racial justice and policy reform.

“Her years as Secretary of State have shown that she understands how to strengthen alliances abroad, respond to global crises, and continue American leadership in the world.

“She is forceful in her support for LGBTQ rights, including an end to discrimination against transgender people. She knows the challenges working women face.

“Her tax proposals and commitment to infrastructure investment will be a boon to the middle class. She will continue the important work on health-care reform begun by President Obama. She is a sane voice on guns.”

Vogue also said the words "Madam President" gave "hope", as it has been almost a century since women got the right to vote.

The magazine was founded in 1892 and current editor, Anna Wintour, took the reigns in July 1988.