Tragic circumstances putting a halt to the political career of one of Labour's rising stars, East Coast MP Kiri Allan, was just the start of the party's headaches this week.  Along with speculation over its tax plans and signs of caucus disunity, leader Chris Hipkins is left with an incredible challenge to refocus Labour on the fast-approaching election.   In this week's Focus on Politics, Political Reporter Anneke Smith examines the sudden resignation of a minister and the implications for Labour as the election nears.