TOKYO, May 22 (Reuters) - Japanese Prime Minister Fumio Kishida is increasingly certain to call a snap election, perhaps within weeks, as domestic support surges after a G7 summit that drew a surprise visit by Ukraine's president. Although Kishida said on Sunday he was not thinking of dissolving parliament now, experts feel he may not be able to resist as favourable conditions stack up. "For Kishida, Zelenskiy's visit has a unique significance that will help boost his support rating," said Shigenobu Tamura, a political analyst and former LDP staffer. On Friday, it powered to its highest since 1990. read moreCalling an early election could mean less time for the opposition to prepare. An early election might come too soon to guarantee Kishida the LDP presidency even if the party does well, as a threat looms from rising prices, said analyst Atsuo Ito.

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