UPDATE 3-U.S. candidate beats Russian to head U.N. tech agency

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139 votes for U.S. candidate vs 25 for Russian

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ITU election seen as symbolically important

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U.S. President, Blinken had backed U.S. candidate

(Adds full count, Biden statement, details and bullets)

By Emma Farge

GENEVA, Sept 29 (Reuters) -

A U.S. candidate decisively beat her Russian rival to become the next head of the main U.N. technology agency on Thursday in an election seen as a test of how many countries are still siding with Moscow after its invasion of Ukraine.

Doreen Bogdan-Martin won the election for Secretary-General of the International Telecommunication Union (ITU) - the U.N. body that sets standards for new technologies - with 139 votes out of 172, defeating Russia's Rashid Ismailov who got 25.

In a sign of the significance of her campaign to Washington, U.S. Secretary of State Anton Blinken wrote an endorsement in her brochure and President Joe Biden issued a

supportive statement

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"I've worked for this moment for more than three decades," Bogdan-Martin said after her win in the secret ballot held in Bucharest.

The ITU veteran pledged to improve digital connectivity and use technology to address challenges such as the climate crisis, food security and the gender divide.

"It's a symbolically very important election," Olaf Wientzek, director of the Geneva office of the German Konrad Adenauer Foundation, said. "It's a way to measure how many countries are still siding with Russia," he added, describing the outcome as a "heavy defeat" for Moscow.

Ismailov, who has held posts at Huawei and Nokia as well as Russian government roles, ran on a commitment to make technology more “human-centric” and to bridge digital divides.

A Russian mission spokesperson was not immediately available for comment.

Some observers had depicted the vote as a battle over the control on the internet, between open standards and countries seeking to step up controls over communications.

"It's a good story line but not really realistic. The Secretary-General doesn't determine policy," ITU Deputy SG Malcolm Johnson told Reuters.

He said the agency's 193 member states made the high-level decisions while most of the standardisation work was done by private sector members.

Bogdan-Martin is the first woman to head the Geneva-based agency which allocates global radio spectrum and satellite orbits and sets standards for artificial intelligence and other new technologies. She replaces China's Houlin Zhao. (Reporting by Emma Farge; Editing by Maria Sheahan, Paul Carrel and Andrew Heavens)