SYDNEY (Reuters) - Australia's centre-left Labor government is likely to retain power in a close-run national election this weekend, two opinion polls showed on Thursday, with voters ranking U.S. President Donald Trump's policies among their top concerns.

A RedBridge-Accent poll published by News Corp newspapers on Thursday showed Labor leading 53%-47% against the conservative Liberal-National coalition under Australia's two-party preferential voting system, where votes are distributed until a winner is declared.