Just four months ahead of the Assembly polls in Punjab, Congress veteran Amarinder Singh on Saturday stepped down as chief minister, citing "humiliation" after a section of MLAs sought a change in state leadership "for the third time in recent months". <br /> <br />With the captain's resignation, speculations on who would be at the helm of the Congress party have started to grow. Former Punjab Congress president Sunil Jakhar has emerged as a frontrunner amid reports that the party wants to project a non-Sikh chief ministerial face ahead of polls to counter AAP, which is gaining ground in the state.