Arizona Democratic Representative Ruben Gallego announced he will seek the nomination for the Senate this Monday, attempting to defeat incumbent and newly independent Senator Kyrsten Sinema. Sinema, who recently changed her party affiliation from Democrat to Independent, has been an important swing vote throughout her time in the legislature. Gallego claims his decision to challenge Sinema is not due to her leaving the Democratic Party, but rather because she has not kept her promises to the citizens of Arizona. Gallega emphasized this point saying that, “as a Marine, I never back down from a fight, and in the Senate I’ll fight to make sure every Arizonan has the same chance that I had at the American Dream.”