Democratic Congresswoman Rashida Tlaib declined to endorse her party's presidential nominee and Vice President Kamala Harris during a union rally in Michigan, one of the seven swing states expected to decide the presidential race.

Tlaib, the first Palestinian-American member of Congress, urged those present to vote, but focused her remarks on local polls that will coincide with the presidential election next Tuesday.

"Don't underestimate the power that you all have. It's bigger than those ads, those signs, those billboards," she told participants at a rally organized by the United Auto Workers in Detroit, Michigan, on Friday night.

“You all have a greater power to rally people who understand that we have to fight against corporate greed in our country,” she continued.

Tlaib is the only one of the four left-wing Democratic congresswomen known as the Squad who has not declared her support for Kamala Harris.

The Palestinian-American representative criticized the Democrats' position on the war on Gaza, especially after the party held its general conference in Chicago last August without including any Palestinian-American speakers.

The Guardian newspaper pointed out that Tlaib's refusal to support Harris comes at a time when a poll showed that 43% of American Muslims support Green Party candidate Jill Stein, who called for an end to the genocide in Gaza.

Democrats blamed Stein for Hillary Clinton's defeat to Republican Donald Trump in 2016, saying she was responsible for their losses in Michigan and Wisconsin. Some Democrats fear the same could happen this election.