The group includes former conservative premier Beata Szydło, who garnered an unprecedented 524,951 votes, the most anyone in Poland has ever won in elections to the European Parliament.
Among the newly elected Eurodeputies is also Jerzy Buzek, a former Polish prime minister who served as president of the European Parliament from 2009 to 2012. Running on the ticket of the opposition European Coalition group, Buzek won 421,394 votes, the second-highest number nationwide.
The list of Polish ex-heads of government who have secured European Parliament seats includes centrist politician Ewa Kopacz, who was supported by 252,032 voters on Sunday.
Completing the list are three former leftist prime ministers: Włodzimierz Cimoszewicz, who was elected with 217,063 votes; Marek Belka, who garnered 180,076 votes; and Leszek Miller, who claimed 79,380.
Meanwhile, several current Polish government ministers are also expected to switch Warsaw for Brussels after successfully running for the European Parliament.
Poles chose a total of 52 Eurodeputies when they went to the ballot box on Sunday.
One of them, Dominik Tarczyński, a lawmaker representing Poland's governing conservatives, will not take his seat until Britain exits the European Union, public broadcaster TVP Info has reported.
Sunday's vote, which brought a landslide win for Poland's ruling conservative Law and Justice (PiS) party, was a key test for the country’s political parties ahead of national parliamentary elections this autumn.
Turnout was a record 45.68 percent.
The European Parliament is the directly elected legislative body of the European Union, of which Poland has been part since 2004.
Source: wprost.pl, TVN, tvp.info