The ruling Liberal Democratic Party lost all three seats up for grabs in Japanese parliamentary elections Sunday, dealing a significant blow to Prime Minister Yoshihide Suga as he considers the timing of a general election that must be held by this fall.

The results of the first national elections since Suga took office in September last year reflect voters' discontent with the government's coronavirus response as well as scandals that bought about two of the elections, and the defeats are likely to bring Suga's leadership into question.

Candidates backed by the main opposition Constitutional Democratic Party of Japan won a re-held House of Councillors election in the Hiroshima constituency, an Upper House by-election in the Nagano constituency and a House of Representatives by-election for the No. 2 single-seat district in Hokkaido.