In a column for the Sunday Mail, the SNP leader wrote she “fervently hopes” Clinton beats Republican rival Donald Trump in Tuesday’s vote.
“Her election would be a result which was warmly welcomed around the globe but would also mark the shattering of the glass ceiling in terms of equality for women,” Sturgeon wrote.
“She is not perfect – what politician, anywhere, is?” she added.
However, when Sturgeon posted the #ImWithHer slogan on her official Facebook page, users of the social media site were quick to voice their disapproval, arguing the Scottish National Party (SNP) leader did not speak for the people of Scotland.
“I really hope someone at the SNP media office is taking note of these comments. Scotland does not support Hillary Clinton, this post should be removed as it’s an insult to us all,” one Facebook user said.
“Truly shocked at the First Minister stating a personal opinion. You do not speak for Scotland but for yourself. You are in a position of power, First Minister, and you would do well to remember that,” another added.
Meanwhile, Theresa May caught flak after a Downing Street spokesperson said on Monday the prime minister wished both Trump and Clinton luck in Tuesday’s election.
Liberal Democrat leader Tim Farron said of the comments: “Donald Trump is not just mad and bad but he’s also dangerous. Why would you wish him luck?
“I have never seen anyone so unworthy of the office of the presidency in history.”