In a rare foray into international diplomacy, the CFMEU has written to Foreign Minister Julie Bishop, urging her to recognise recent presidential elections held in Venezuela and congratulate incumbent Nicolás Maduro, who claimed victory after the poll.

A letter of support from the CFMEU's WA president Vinnie Molina to Ms Bishop was circulated to federal MPs on Tuesday by Venezuela's Australian Minister Counsellor Chargé d'Affaires Daniel Gasparri-Rey.

Mr Molina, who is also president of the Communist Party of Australia's central committee, said he was one of two Australian observers at the May election of Mr Maduro, where he claimed 67.8 per cent of the presidential vote.

CFMEU's WA president Vinnie Molina has weighed in on Australia's foreign policy, calling on Foreign Minister Julie Bishop to recognise controversial Venezuelan elections. Credit:Communist Party of Australia/Facebook

Mr Molina said he saw the "sophisticated mechanisms employed to ensure that no-one can vote more than once or use a false identity".