Israel’s Central Elections Committee voted this week to prevent the three parties that make up the Joint List, an alliance of Arab-majority parties, from contesting the October 27 vote, according to The Telegraph.

The committee said the grouping had allegedly expressed support for armed struggle against the state of Israel. The decision threatens to disenfranchise about a million Israeli citizens, mostly of Arab ethnicity. The British newspaper notes the ruling is likely to be struck down by the supreme court in the coming days, as the court traditionally sets a high legal threshold for disqualifying a political party.