Man, who is also a Politburo member, was the first to cast ballots at Polling Station No 13.
At this polling station, constituents can come to vote from 6am to 7pm, deputy head of Voting Group No 13 Dinh Van Thu said, adding that measures have also been applied to prevent COVID-19 transmission.
Early voting was held at some military units in Can Tho on May 20.
Nearly 69.2 million voters nationwide will select 500 deputies to the 15th NA, nearly 4,000 to provincial-level People’s Councils, almost 23,000 to district-level People’s Councils, and over 240,000 to communal-level People’s Councils.