Feb. 20 (Bloomberg) -- Australian Prime Minister Julia Gillard faces rising speculation the predecessor she ousted will bid for a comeback, as her party trails in polls after pushing through unpopular climate-change and mining-tax measures. Foreign Minister Kevin Rudd said at the weekend he has learned to better delegate and consult with staff. A video, uploaded on YouTube on Feb. 17, shows Rudd during his term as prime minister swearing and blaming others for having the wrong wording as he tried to pre-record a speech in Chinese. Daniel Petrie and Rishaad Salamat report on Bloomberg Television's "On the Move Asia." (Source: Bloomberg)