More Canadians, Britons and Australians prefer Prince William to become the next monarch instead of his father, Prince Charles, a new poll says.

The Angus Reid poll released Thursday found 47 per cent of Canadians would like to see Prince William become king after Queen Elizabeth II's reign ends.

In Britain, the number rises to 51 per cent, while 52 per cent of Australians would prefer Prince William as king.

Only 17 per cent of Canadians surveyed want to have a King Charles, while 31 per cent in Britain and 13 per cent in Australia support him as monarch.

Prince William has also become the most popular member of the royal family, even surpassing the Queen, according to the poll.

About 77 per cent of Canadians, along with 82 per cent in Britain, and 83 per cent of Aussies have a favourable opinion of the prince, who just celebrated his first wedding anniversary with the Duchess of Cambridge, Catherine Middleton.

She rates second behind her husband in popularity at 79 per cent in Canada and 77 per cent and 73 per cent in Australia and Britain respectively.

Charles didn't fare as well in public opinion with only 34 per cent of Canadians having a favourable opinion of him. He garnered higher support in Britain at 45 per cent and the lowest in Australia at 33 per cent.

Prince Charles and his wife, Camilla, the Duchess of Cornwall, will be visiting Canada this summer as part of the Queen's Diamond Jubilee celebrations.

Camilla, like her husband, is at the bottom of the royal popularity chart with a mere 31 per cent of Britons having a favourable opinion of her, followed by 21 per cent in Canada and 16 per cent in Australia.

The Queen enjoys about 70 per cent support in all three countries and that ranking is similar for Prince Harry, William's younger brother.

About 50 per cent of Britons and Canadians see Prince Philip in a positive light, while the same is true of 45 per cent in Australia.

As for the future of the monarchy in Canada, 33 per cent of those surveyed wanted to continue with a royal head of state. That's somewhat lower than Australia at 36 per cent.

In Britain, the monarchy was preferred by a four-to-one margin, with about 26 per cent voicing indifference.

The online survey involved 1,506, 2,019 and 2,005 adults in Australia, Britain and Canada respectively and has a margin of error of plus or minus 2.5 per cent in Australia and 2.2 per cent in Canada and Britain.

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