Sarah Palin, the former Alaska governor and 2008 Vice Presidential candidate, is endorsing Donald Trump as the Republican White House nominee, US media report.
"I'm proud to endorse Donald J. Trump for president," Mrs Palin said in a statement provided by Mr Trump's campaign, according to the New York Times.
The real estate billionaire said in a statement that he was "greatly honored by Sarah's endorsement".
Advertisement
She is tipped to announce her endorsement in person on stage alongside Mr Trump at a rally in Ames, Iowa, on Tuesday afternoon.
Mrs Palin's seal of approval comes at a pivotal moment as the countdown begins to the first-in-the-nation presidential primary, on 1 February, in the Hawkeye state.
