Prime Minister Binyamin Netanyahu called Meretz chairwoman Zehava Gal-On on Thursday and invited her to join the coalition talks.
Gal-On accepted the prime minister's invitation but said she will not join the government.
Netanyahu is also scheduled to talk to Labor leader Shelly Yacimovich.
The Likud Beytenu said Netanyahu approached Gal-On and Yacimovich in order to form a government as wide as possible.
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