Hi Gorby,
I don't know Mr Heng Chee How or Mr Eric Low well but frankly, I gather that they are probably two of the nicer PAP people around.
I believe the PAP is not dumb to field nasty PAP candidates if they wish to curb support of Workers' Party leader Mr Low Thia Khiang in Hougang.
The two Lows will greet and joke with each other everytime they met. But of course, this is politics; they politick against each other from the comfort of their backrooms

but not damaging.
I get my "sources" from Workers' Party members and HGCC helpers active in Hougang constituency activities.

Regards