Japanese prime minister’s landslide win gives her party a lower-house supermajority and more room to enact a right-wing agenda

The governing party of Prime Minister Sanae Takaichi secured a two-thirds supermajority in a key parliamentary election Sunday, Japanese media reported citing preliminary results, earning a landslide victory thanks to her popularity.

Takaichi, in a televised interview with public television network NHK following her sweeping victory, said she is now ready to pursue policies that would make Japan strong and prosperous.

NHK, citing results of vote counts, said Takaichi’s Liberal Democratic Party...