World Longest ruling party will be Korean Workers Party, which
is the party who rules North Korea.
Second will be Chinese Communist Party. Well, there are people
say soon people in North will revolt, and probably DPRK will
collapse soon especially they dont really accept Kim Jong Il's 3rd
son to be his successor. So this CCP in China will takeover their
record.
As for PAP --- no chance la, CCP where can / will collapse one
leh? Even if people are unhappy, they are at least more stable than
North as we do not see mass refugees fleeing to neighbouring
countries / areas from China anymore.
Edit: Compared to Cheng San and Aljunied is much fair as they
are 5 seats, unlike Eunos which is 3 / 4 seats in 1988 and 1991
where WP got 49% and 47% of votes respectively.
Well, so conincide is Cheng San in 1997 and Aljunied in 2006 get
45% and 43% of votes by WP respectively. 2001 sure jia lat like
hell, so Gomez wayang. 
The ironic here is PAP give us prosperity, education, peace and
harmony, tho we may have to slave for it, but the reward is pure,
unlike N korea, who accomplished nothing but get poor and poorer
ending up with its citizen having to suffer without knowning that
they are suffering because there is total lack of exposure and
certainly human rights.
As for the CCP in China, it is begining to show improvement but
still there is a great disparity between the rich and the rural
poor due to poor distribution of wealth and greedyness of the rich
to pound on the poor. This is exactly the same condition before the
CCP took over the Kuo Ming Tang, CCP was then the poor pleasants,
get together and revolted against the Kuo Ming ruling party and
those richs, took over powder and ruled China till modernisation by
Teng which open the door to demorcratic economy. And today, you see
the same thing again, somewhere, somehow, there will be another
young Mao among the poors who will start the revolution again.
