Jews have tended to form relatively closely related groups in independent communities, with most in a community sharing significant ancestry in common. For Jewish populations of the diaspora, the genetic composition of Ashkenazi, Sephardi, and Mizrahi Jewish populations show a predominant amount of shared Middle Eastern ancestry. According to Behar, the most parsimonious explanation for this shared Middle Eastern ancestry is that it is "consistent with the historical formulation of the Jewish people as descending from ancient Hebrew and Israelite residents of the Levant" and "the dispersion of the people of ancient Israel throughout the Old World". North African, Italian and
Ashkenazi Jews in Israel class, and the disparity between Ashkenazim and Mizrahim diminished (but did not completely disappear), with Mizrahi political expression becoming increasingly linked to the Likud and Shas parties; Shas was founded as a party to represent Mizrahim while Likud, the largest right-wing party, in Israel became increasingly influenced by Mizrahi political articulation, with the Mizrahi middle class' political coming-of-age held by political science commentators to be embodied by the rise of Mizrahi Likud politicians such as Moshe Kahlon and Miri Regev. The Ashkenazi vote has, aside from electorally limited majority-Ashkenazi ultra-religious parties such as Habayit Hayehudi, long been associated with secularism