Israel's political parties have finalized their electoral forms, setting up the official lines for the country's national election on Sept. 17 that will determine the composition of the Knesset -- and likely decide whether embattled Prime Minister Benjamin Netanyahu will return to office. Last-minute mergers between smaller parties on the right and the left now give the bigger parties on both sides of the spectrum, Likud and Blue and White, a clear idea of who they might ally with -- from the United Right led by Ayelet Shaked and Naftali Bennett to the Democratic Camp of former Prime Minister Ehud Barak. Yet these alliances have done little to close the fundamental splits on each side of Israel's political spectrum -- leaving Avigdor Lieberman as a possible kingmaker....