Rabbi Ada Zavidov will be declared the new chairwoman of the Reform Movement's Rabbinic Council on Thursday at the opening of the Israel Movement for Progressive Judaism's 18th Biennial Convention. About 1,000 rabbis and movement members, including Rabbi Elliott Kleinman, vice president of the Union for Reform Judaism in America, are expected to attend the conference, which will focus on the Jewish family. Zavidov, granddaughter of Aba Achimeir - one of the founding fathers of the Revisionist Party in pre-state Israel - is the first female Israeli native to chair the rabbinic council. "Orthodox Judaism's approach to unconventional families is closed-minded," said Zavidov, commenting on the theme of this year's conference. "In contrast, Reform Judaism has a unique openness to all families, including those headed by same-sex couples. It's important that people know that." Davidov said that despite her grandfather's strongly right-wing political views, she defines herself politically as "center-to-left."