On the evening of the 20th, the National Congress entered its fourth and final evening. The 77 year old presidential candidate, Joe Biden, will deliver one of the most critical speeches of his campaign after accepting the party’s presidential nomination. According to CNN, Biden hopes to convince frustrated voters that he is more compassionate and competent than current president Donald Trump. This will be the most important speech of the veteran who has been in American politics for nearly 50 years. Kate Bedingfield, Biden’s deputy campaign manager and communications director, said: “I think at this moment, Americans are looking for leadership from the president, and tonight, they’re going to see [the next] president.” < p > < p > analysis shows that due to the new crown epidemic, most of the activities of the conference were held online, which aggravated the weight of the speech. In the absence of normal contact with Biden himself, this key speech may affect voters’ views on Biden. Viewers will be watching what Biden says, especially how he conceives of his campaign against incumbent president trump in front of a national audience. A senior consultant told CNN on the evening of the 19th that Biden believed that the moment was “far more important than Trump’s own topic” and “this is his opportunity to build an optimistic and hopeful America”. According to the report, Biden’s speech will refer more to his rough life and government work experience than to his criticism of trump. In his long political career of nearly 50 years, Biden has run for president three times. In 1988, a plagiarism scandal ended his hopes; in 2008, when then Senator Barack Obama ignited a campaign and failed to win the year, Hillary’s strong campaign forced him to give up; until this year, he said he felt “the soul of the country” was at stake. Biden’s four former primary rivals: New Jersey Senator Cory Booker, former South Bend mayor Pete Buttigieg, former New York Mayor Michael Blomberg and businessman Andrew Yang) will tell people about Joe Biden they met during the campaign and why they think he should be president. With Biden’s speech, the four-day conference will reach its climax. Starting from next Monday, Republicans will hold a national convention to officially sound the bugle for the final stage of the election campaign.