Candidates Shelly Yachimovich and Amir Peretz raced to gather endorsements from leading Labor Party members on Sunday ahead of runoff elections Wednesday that will determine the party's next leader. Former Minority Affairs Minister MK Avishay Braverman declared his support for Yachimovich on Sunday. He was joined by 13 mayors, including Tel Aviv Mayor Ron Huldai and Ra'anana Mayor Nahum Hofree, as well as Kibbutz Movement Secretary-General Ze'ev Shor. Yachimovich also secured the endorsement of several prominent former Herzog and Mitzna supporters, including Yisrael Savyon, who ran the Haifa headquarters for Mitzna's campaign, Gideon Ben-Yisrael and Moti Agimi, chairmen of Herzog's campaign headquarters, and Adir Vishnia, Herzog's political adviser. Peretz also gained several noteworthy endorsements. Former ministers and veteran Knesset members Moshe Shahal, Uzi Baram and Nissim Zvili all declared their support for him, and were joined by several kibbutz movement leaders as well as Dalia Rabin-Pelossof, daughter of late former Prime Minister Yitzhak Rabin. Get the Israel Hayom newsletter sent to your mailbox! "Peretz is who the party needs now. The traditional political platform of the Labor Movement, together with an emphasis on social equality, must be part of Labor's identity," MK Moshe Shahal said. After candidates Issac Herzog and Amram Mitzna were pushed out of the race in last week's first round, the heat is on Yachimovich and Peretz, who are scampering to attract as many prestigious endorsements as possible. In the first round of voting, Yachimovich took 32 percent of the vote while Peretz secured 31 percent. Both Yachimovich and Peretz are predicting that swing votes will come from the kibbutzim and Arab sectors. Most predictions show Yachimovich garnering the majority of kibbutz votes, with the Arab sectors favoring Peretz.