With the Civic Coalition behind in the polls, Małgorzata Kidawa-Błońska, named earlier this week as the bloc’s choice for prime minister, promised extra money for pensioners, help for women and free internet for people aged under 24.
At a convention in Warsaw to outline the bloc's election programme, she vowed to give "active OAPs" a bonus pension pay-out of up to PLN 20,000 (EUR 4,600, USD 5,080).
She announced plans to give fathers two months of paid paternity leave.
She also unveiled a "package for women," saying: "Finally, we will equalise wages for women and men in the same positions.”
She also promised free in-vitro fertilisation treatment and free epidurals for women giving birth.
Poles will vote in parliamentary elections on October 13.
After four years in power, Poland’s governing conservative Law and Justice (PiS) party is bidding for a second term following a landslide win in 2015.
As election day approaches, the country's ruling conservatives are ahead in the opinion polls, while the opposition is divided into three separate camps.
Mateusz Morawiecki will stay on as Poland’s prime minister if the conservatives win the election, his deputy said earlier this week.
Law and Justice has launched a campaign to highlight what its says were cases of massive fuel smuggling and tax fraud under the country’s previous government, led by the Civic Platform, which is now in opposition.