Arizona Sen. Kyrsten Sinema (D) was unanimously censured by the Arizona Democratic Party on Saturday, but the centrist Democrat refused to bow to increasing pressure.

In a statement after the censure, spokeswoman Hannah Hurley said that Sinema’s allegiance lays with her constituents in the Grand Canyon State — not a political party.

“During three terms in the U.S. House, and now in the Senate, Kyrsten has always promised Arizonans she would be an independent voice for the state — not for either political party,” Hurley said. “She’s delivered for Arizonans and has always been honest about where she stands.”

The executive board of the Arizona Democratic Party met Saturday morning and voted to censure Sinema for opposing the abolition of the Senate filibuster. Sources told NBC News the censure resolution passed unanimously.