Democratic candidates united against Trump during a debate for the primary

"This president is the most corrupt in modern history," said Joe Biden, one of the favorites, at the heart of the Ukrainian affair in which Donald Trump got bogged down. Congressional Democrats "have no choice but to move forward" towards his removal from office, Barack Obama's former vice-president said, defending himself from reprehensible acts against the president who accuses him without evidence, as well as his son Hunter, to be "corrupt".

"We must focus on Donald Trump"

"My son did nothing wrong, I did not do anything wrong," he said. "What we have to do now is to focus on Donald Trump, he does not want me to be the Democratic candidate … because he knows I will beat him up" in the US presidential election. November 2020, he said.

This is because he asked Kiev to investigate the Biden that Donald Trump is now suspected by the Democrats of abuse of power and to have claimed the interference of a foreign power for his political benefit . A member of the board of directors of a major Ukrainian gas group, Burisma, between 2014 and 2019, Hunter Biden acknowledged on Tuesday that he made a political "mistake" when taking office when his father was Barack Obama's vice president, but he defended himself from all illegal activity.

Warren targeted by his competitors

The scandal erupted even as 76-year-old Joe Biden was caught in the polls by 70-year-old Progressive Elizabeth Warren (29.4% for him, versus 23.4% according to RealClearPolitics' latest average). With Bernie Sanders, back down to 15.6% in the polls after suffering a heart attack and surgery, she shares the left wing of the primary in the presidential elections of 2020.

She was strongly criticized during the debate by centrist candidates who accused her of not having realistic proposals on health reform or her tax program. Its ability to react to attacks is scrutinized by Democratic voters, who want to make sure to choose the candidate able to beat Donald Trump, known for his sharp criticism of his rivals.