After months of uncertainty and speculation, we are entering the phase of the process that will produce the person who will run against US President Donald Trump in November's election, as the mist clears in the Democratic camp. Dozens of candidates have now been narrowed down to four main likely contenders.
There was no hinting around, it was a straight-out trade, two key White House officials told impeachment investigators. If Ukraine's new leader wanted an Oval Office welcome from Donald Trump — and he did — he would have to open a public probe into the president's Democratic foe Joe Biden and his son.
Former US vice president Joe Biden is already leading by a wide margin over other contenders for the Democratic nomination for the 2020 presidency. National opinion polls carried out in recent days, after the announcement of his candidacy, show him with around 40 percent support, making Biden the current favorite. All other candidates are lagging considerably.