The survey by pollster Kantar found that if an election were held today, the governing Law and Justice (PiS) party would gain 44 percent of the vote, while the Civic Coalition of opposition groupings would garner 27 percent.
The Civic Coalition is an alliance between the centre-right Civic Platform party, which governed Poland between 2007 and 2015, and the smaller Modern (Nowoczesna) party.
Meanwhile, the Left alliance, a grouping between the Democratic Left Alliance (SLD) and other left-wing parties, would gain 11 percent of the vote.
The Civic Coalition has seen no change in support since Kantar’s July poll, while the Law and Justice party has seen support grow by 2 percentage points.
The nationalist Confederation party is the only other party set to narrowly clear Poland’s 5 percent threshold to enter parliament.
According to the survey, the Polish People’s Party (PSL) would gain only 4 percent support, failing to win seats in parliament.
The Kantar poll was conducted on August 12 and 13 on a representative sample of 1,003 adult residents of Poland.