US poll: Hillary Clinton picks Tim Kaine as running mate

US poll: Hillary Clinton picks Tim Kaine as running mate
United Bank for Africa

Democratic presidential candidate Hillary Clinton has selected Tim Kaine, a centrist senator from Virginia, as her running mate.

Mrs Clinton broke the news in a tweet late on Friday. She plans a formal announcement on Saturday.

Mrs Clinton passed over more left-leaning candidates in favour of the 58-year-old senator, who is a strong supporter of free-trade agreements.

His home state of Virginia is a major battleground in the coming election.