Bloomberg formally announces US presidential candidacy
Rebuke for Trump in races seen as barometers for 2020 election
Lewinsky-produced 'impeachment' drama to air weeks before US election
Racial diversity dispute spurs shakeup at US House Democratic campaign arm
Billionaire Democrat launches 2020 White House bid
Biden offers anti-Trump theme: Stop fighting and 'start fixing'
Biden's rise in 2020 race catches Trump's eye, unnerves his allies
2020 spouses eye new title: First Gentleman
