Gallup is a famous organization and frequently conducts surveys. Anyhow there is another organization that has been conducting opinion surveys whose methodology is scientifically very accurate. They donot ask online community only or urban but distribute their enquiries equally to rural urban province wise population as per its percentage (ie asking 70% people from rural area and 30% from urban taking from all districts and provinces as per their population weigtage like 55% from Punjab 28% from sindh and so on)
This organization is the Irish Republic Institute and for some reasons it has not conducted any survey ever since 2009. Before that they were conducting survey after every 3-4 months all over Pakistan since 2003.
Their survey conducted before 2008 showed accuracy in 2008 elections.
Their last survey conducted in 2009 is given below in the link
http://www.iri.org/sites/default/fi...an Public Opinion, July 15-August 7, 2009.pdf
The main points in this survey at that time were
PML N had national popularity of 57% , PPP 22%. Its almost the same way like Gallup says PTI nationally was standing around 3-4% at that time but today Gallup says PTI gained and reached 6%. Now gallup says PTI stands and 24% in KPK while by the end of 2009 IRI said PTI stood at 22% in KPK.
Gallup now says PML fell to 43% nationally while it was at 57% in 2009 by IRI survey, this may be because of their policies, PML can regain the support after initiating aggressive politics.
Before 2008 elections IRI survey said PPP has 30% support nationally and PML has 24% support and PML Q 23%.
It turned out to be accurate as PPP got 31% votes in 2008 and PML N got 22% and PML Q got 23%. Then in the graph it can be seen PML gradually started snatching PML Q votes and multiplied and doubled as Muslim Leagues vote unified under the flaq of PML N. Irfan Siddiqui is hinting correctly that Like in IRI survey PPP enjoyed victory with 30% when Mulsim leagues vote splitted between PML N 22% and PML Q 23% now PPP must break the unified muslim league vote standing around 41-44% to win elections again.