Pawlak lost the election for president of PSL to parliament member Janusz Piechocinski Saturday by 547 votes to 530 at a party congress, Polskie Radio reported.
"Because I fundamentally disagree with the proposals Janusz Piechocinski, I will resign from the post of deputy prime minister and minister of economy," Pawlak, a former prime minister of Poland, said after the defeat.
Piechocinsk called on Pawlak to reconsider.
"You are deputy prime minister and economy minister, and should remain so," he said.
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