By law, the leader of the Blue-and-White must complete the coalition talks within 28 days and form the government, and if he fails to form the government within that time, he must return the post to the President.
Although Gantz is optimistic that he will get the support of a sufficient majority to form a coalition, Israeli experts say that like Netanyahu, the Blue and White leader will fail.
Mavi-Beyaz and the two left-wing parties that support it (Labor Party, Democratic Union Alliance) number of deputies.
Gantz, like Netanyahu, fails to form the government, said the country could be re-elected early elections.
– Right-wing parties to join coalition talks
Hours before Gantz became president, Netanyahu and the leaders of the three right-wing parties (Chas, Yemina, United Torah) came together.
During the meeting, it was decided that 4 right-wing parties with 55 deputies in the 120-seat Parliament will participate in the coalition talks as a bloc.
– Netanyahu had failed
Rivlin, last month's election Likud party, although the second right-wing party, who received the support of Netanyahu'yu on September 25, the task of forming a coalition government.
Blue-White and former Defense Minister Avigdor Liberman's party Israel, our House did not support the number of members of Netanyahu'un had remained at 55'de.
Netanyahu failed to form a coalition and returned his position to President Rivlin on Monday evening.
Benny Gantz led the Blue and White Alliance, which had 33 deputies in the Israeli elections on September 17th.
Blue-White was followed by Netanyahu's party Likud, with 32 deputies, while the Common Arab List Bloc, composed of parties representing Palestinian Palestinian citizens, succeeded to become the third largest group in parliament by issuing 13 deputies.
The Shas Party, representing 9 ultra-Orthodox Jews, and the House of Israel, former Defense Minister Avigdor Liberman, took part in the parliament with 8 deputies.
The Yamina (Right) Alliance, led by former Justice Minister Ayelet Shaked, and the United Torah Party, each issued seven deputies.
In the left-wing bloc, the Labor Party has six seats, while the Democratic Union Alliance, backed by former Prime Minister Ehud Barak, is the smallest group of parliament with five MPs.
In the second general election this year, no party had reached the number of 61 deputies required to come to power alone in the 120-seat assembly.