the PAP is very cunning. they are playing up the sentiment that dr chee is here to divide the opposition.
Agree, they want SDP to be a counterbalance to WP to split the opposition vote in 2016, knowing that WP is on the rise, having won a GRC.
At the very worst, he'd just be a toothless threat, his reputation among the conservative masses having been torn to shreds by the MSM, the CST ouster, and his various run-ins with the law through the years.
Either way, PAP gains.