Japan’s ruling coalition won a resounding victory in lower house elections Sunday, firming up Prime Minister Shinzo Abe’s hold on power as he prepares to push forward on several politically difficult fronts.

Helicopter surveys on Sunday showed more extensive damage than earlier thought from an overnight earthquake in the mountainous area of central Japan that hosted the 1998 Winter Olympics.

A strong earthquake late Saturday struck a mountainous area of central Japan that hosted the 1998 winter Olympics, knocking down at least 10 homes in a ski resort town and injuring several people, officials said.