PPP = Pakistan peoples party (led until recently by the late Benazir Bhutto)
PML-N = Pakistan Muslim League - Nawaz Group (the original party that still follows Nawaz sharif.)
PML-Q = Pakistan Muslim League - Qaid Group (the splinterd shard that still follows Musharraf.)
ANP = Awami National Party (Led by Asfandyar Wali)
MQM = Muttahida Qomi Party (Led by Altaf Hussain)
now the top parts are the seat location.
NA : National Assembly (the party with majority here will pick the next Prime Minister)
PP : Province of Punjab (provincial assembly)
PS : Province of Sindh (provincial assembly)
PF : Province of NWFP (aka Sarhad) (provincial assembly)
PB : Province of Balochistan (provincial assembly)
Thanks to the commentor ‘Some Guy’.
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Last 5 posts by The Pakistani Spectator
Early poll results have shown that the anti-Musharraf parties,  and , are emerging as victorious. 
The early results also show that , the party supporting Pervez Musharraf, has been defeated.

Furthermore, the results for Pakistan's  indicate that the Pakistan Peoples Party currently have a small lead with 78 seats, with 's party just behind with 72 seats. The party which wins the elections for the National Assembly will choose the Prime Minister of Pakistan.
 
The elections had a slow start at 8 a.m. (0300 GMT), as fears of violence kept many voters away. To enforce security, the Pakistani police is backed up by some 80,000 troops. The BBC reported that 80 million people are eligible to vote, but many are expected to stay at home, largely because of fears about security. Authorities reported at least five explosions that had taken place on election day, all but one of which occurred near a polling area.