Over 25 per cent of respondents in the poll conducted by Herald magazine said they intend to vote for the PML-N in the May 11 general election while 24.98 per cent said their vote would go to Imran Khan's Pakistan Tehrik-e-Insaf.
Only 17.74 per cent of respondents said they would vote for the Pakistan People's Party, which led the outgoing government that ruled Pakistan for the past five years.
The PPP trailed way behind at 14.33 per cent.
In the PPP's traditional stronghold of Sindh, the party enjoyed the biggest share of support with 35.21 per cent of respondents saying they would vote for it, followed by the Muttahida Qaumi Movement with 19.37 per cent, Pakistan Tehrik-e-Insaf with 8.45 per cent and PML-N with 8.1 per cent.
In Khyber-Pakthunkhwa, Imran Khan's party was leading with the support of 35.41 per cent of respondents while the PML-N (with 12.92 per cent support) and the Awami National Party (with 12.44 per cent support) are distant runners-up.
The Balochistan National Party-Mengal has the highest backing among poll respondents in Balochistan, at 19.18 per cent, with the PPP a distant second at 8.22 per cent.
The two parties leading nationally, PML-N and Pakistan Tehrik-e-Insaf, only have 2.74 per cent and 5.48 per cent support, respectively, among respondents in Balochistan.
It also shows a high level of distrust among respondents about the polling process, with 65.6 per cent of them saying that polls in Pakistan are not free, fair and transparent.
Only 29 per cent of respondents believed the Election Commission had the capacity to ensure free, fair and transparent elections, while the number of those who are unsure about it was much higher at 49 per cent.
