Japan's Nikkei falls for 3rd day as trade impasse, election weigh on sentiment

Nikkei falls for third straight session, closing 0.3% lower amid election and trade concerns.

Trade talks with the U.S. remain unresolved, with new 25% tariffs on Japanese imports set for Aug 1.

Political uncertainty looms as PM Ishiba's coalition may lose majority in July 20 upper house vote.

Top gainers include Mitsubishi Heavy and IHI, while Mercari and Nexon led the decliners.