Why WP and not SDP or SPP

In response to MM Lee and SM Goh's decision to quit the Cabinet, we can confirm that some people just never learn.

While the very political politician Low Thia Khiang and the WP have refrained from direct comment, the other Opposition Parties have continued to shoot themselves in the foot.

SPP's Chiam asked "Why now?" and declared that he would have won in Bishan-Toa Payoh GRC instead, and the reason is??????

But, taking the cake is the SDP who said "The MM and SM posts have served no useful purpose except to drain the national budget."