WATCH: Livni taken by surprise as press conference * Gabbay: I took *hit from Livni * Zionist Union fared poorly in polls * Center-left playing field gets crowded ahead of April 9 * Latest election headlines Zionist Union breakup: Labor Party leader Avi Gabbay announced on Tuesday the break-up of the Zionist Union, with Tzipi Livni's Hatunah party. Zionist Union, which won 24 seats in the last election, has tanked in recent polls to as low as nine seats ahead of the April 9 election. In a press conference, Gabbay said he "still believes in partnerships and connections," but said...