PHILADELPHIA, Pennsylvania: US Democrats converge on the City of Brotherly Love to elevate Hillary Clinton this coming week as the party’s nominee who will battle Republican Donald Trump in 2016’s presidential election. The Democratic National Convention gavels in on Monday (Tuesday in Manila) in Philadelphia with the party more unified than the Republicans, whose fissures were laid bare this week as they confirmed brash billionaire Trump as their flag-bearer. But frustrations are nevertheless swirling as delegates bicker over the Democratic nominating process and new hiccups over Clinton camp emails. Clinton is perhaps the most predictable person to launch a campaign in decades, so she will need to cast herself as the race’s energetic optimist who can push the country forward. Her quest received a boost on Saturday (Sunday in Manila) when she introduced Tim Kaine of Virginia as her running mate, a savvy Spanish-speaking US senator with a bright smile but “a backbone of steel,” according to Clinton.