On April 6, 1978, supporters of the party came out in protest by asking bystanders and cars to make noise in support of the opposition. However, on April 7, 1978, the first national election under martial law held for the 165- members to the Interim Batasang Pambansa resulted in the massive victory of the administration coalition party, the “Kilusang Bagong Lipunan ng Nagkakaisang Nacionalista, Liberal, at iba pa” or KBL. Only 15 opposition candidates in other parts of the country won. None of the members of LABAN were elected^{[citation needed]}. The opposition denounced the massive vote buying and cheating in that elections. On June 12, 1978, the Interim Batasang Pambansa was convened with Marcos as President-Prime Minister and Querube Makalintal as Speaker.^{[citation needed]}

Some opposition members went into exile or were driven underground fighting against the Marcos dictatorship. Labor leader Alex Boncayao became guerrilla and was killed by government security forces in 1983.^[1]

As LABAN was a coalition, the results below are combined totals of the parties under LABAN.