Dear Thick If we look at it from a strictly legal argument , then Justice Pillai has made a strong case. The clincher which GMS leaves out is that in 1963 there was inserted a change in the constitution to hold "elections within three months of a vacancy" so that the SG constitution was in line with the Malaysia Constitution. After Singapore left, that change was taken out and it was at the behest of LKY. So then constitutionally the discretion when to call a by election rests entirely in the realm of politics and the pressure and strength of feeling on the ground. Locke