Only Hougang is likely to be clinched by opposition.
Even for Tan CB, he is not expected to deliver. TanCB's overwhelming support in the Presidential Elections will not be duplicated in GE because selfish Singaporeans want opposition but not in their own ward.
Therefore, we are looking at near-total defeat. Oppositions are only fighting for popular votes.
PAP may win all (except HG) seats but hopefully popular votes can still sink below 60% so that they will not be yaya if they win 70% again.