Opinion polls suggest Ishiba’s Liberal Democratic Party (LDP) and coalition partner Komeito may fall short of the 50 seats needed to retain control of the 248-seat upper house of parliament in an election where half the seats are up for grabs.
The polls show smaller opposition parties pushing for tax cuts and increased public spending are set to gain, among them the right-wing Sanseito, which vows to curb immigration, oppose foreign capital inflows and reverse gender equality moves.
A poor showing by the coalition could shake investor confidence in the world’s fourth-largest economy and disrupt critical trade talks with the United States, analysts said.
Ishiba may have to choose between making way for a new LDP leader or scrambling to secure the backing of some opposition parties with policy compromises, said Rintaro Nishimura, an associate at the Asia Group in Japan.
“Each scenario requires the LDP and Komeito to make certain concessions, and will be challenging, as any potential partner has leverage in the negotiations.”
