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Japan's Abe says upper house election win shows support for constitution debate

TOKYO, July 21 (Reuters) - Japanese Prime Minister Shinzo Abe said his ruling coalition's solid win in an upper house election on Sunday showed that voters supported debate over his proposal to revise the post-war, pacifist constitution.

Abe, speaking to a TV broadcaster after exit polls showed his coalition would win a solid majority, also said a scheduled rise in the sales tax to 10% from 8% in October was necessary for the social security system and to gain international trust. (Writing by Linda Sieg Editing by Chang-Ran Kim)