Sinn Féin MPs do not consider up their seats in the House of Commons, hence are not able to vote. Speaker and three Deputy Speakers (two Conservative and just one Labour) have only a tie-breaking vote constrained by conventions. MP originally elected as Labour Co-operative. 1960 - Tony Hoare announces the Quicksort algorithm, the most popular sorter on computers. 1960 (Los Angeles): Kennedy/L. Johnson, Chris (January 21, 2019).