The defeat of the motion is expected to intensify public protests calling for Yoon's ouster and deepen political chaos in South Korea, with a survey suggesting a majority of South Koreans support the president's impeachment.
Yoon's martial law declaration drew criticism from his own ruling conservative party, but it is also determined to oppose Yoon's impeachment apparently because it fears losing the presidency to liberals.
Impeaching Yoon required support from two-thirds of the National Assembly, or 200 of its 300 members. The opposition parties who brought the impeachment motion had 192 seats, but only three lawmakers from PPP participated in the vote. The motion was scrapped without ballot counting because the number of votes didn't reach 200.