The race is on to find Kamala Harris's running mate following the US vice-president becoming the Democratic Party's presumptive nominee for the upcoming presidential election. Ms Harris was already the favourite to get her name at the top of the Democratic ticket after President Joe Biden endorsed her when he decided to bow out of the race on Monday. But it was not clear she would have enough numbers to win her party's nomination until yesterday. In a campaign email sent on Tuesday, Ms Harris said she had secured the broad support needed to become the presumptive Democratic nominee. A...