Complex sentence: He officially became a candidate for the Deputy Presidency on 17 December 2012 and entered the race with the strong backing of the Zuma camp, on 18 December 2012, he was elected deputy president of the ANC.
Split into simpler sentences: He officially became a candidate for the Deputy Presidency on 17 December 2012 and entered the race with the strong backing of the Zuma camp. On 18 December 2012, he was elected as Deputy President of the ANC.