Just 100 days ago, the Aam Aadmi Party had surprised the country by winning a huge mandate in Punjab and trouncing those who had ruled its politics for decades. Sunday was its turn to get the big shock when it lost CM-surrendered Sangrur parliamentary seat to Simranjit Singh Mann, whose Shiromani Akali Dal (Amritsar) was called a “spent force”. AAP’s national ambition will be shaken.