WP concluded it is better to let PAP have a MP walkover victory rather than another oppo party contesting it. WP wants to chop the MP seat for the next election. vast majority of oppo supporters would prefer a contest though.
LW is probably glad that his seat is contested. everyone won their seats and enter parliament, he as the PM enters parliament through a walkover, zero vote. it is so weird, not ideal scenario.
the minor oppo parties contesting the election will increase PAP's popular vote. but if they don't contest, many voters will not get to vote, and PAP can fully devote and consolidate its resources and manpower in rest of the constituencies.