Biden and Trump to debate: Revisiting their most memorable moments

Jess Frampton

Thursday night’s debate between Joe Biden and Donald Trump will be the first time a current US president debates a former one. It’s also the first time either of them has debated at all this election season — Trump skipped the Republican primary debates and Biden, as the incumbent, has debated no one on the Democratic side. Both candidates are polling at 46% nationally, so the stakes could not be higher.

With no recent debate track record for either of them, we look back at the biggest moments from their 2020 debates in search of clues for what to expect on Thursday night.

“Will you just shut up, man?”

The first Biden-Trump debate in September 2020 was chaotic. It was filled with personal attacks, name-calling, and interruptions (averaging about four interruptions per question, mostly from Trump). At one point, Biden turned to the then-president and said, shaking his head, “Will you shut up, man?”

In the second debate a month later, Biden’s prayers were answered when a policy of shutting off mics was implemented. Muting will be used as needed again in this week’s debate.

That doesn’t mean the candidates won’t still try to interrupt each other – after all, they will be in the same room, mics or not. And that’s something experts fear could rattle Biden more this time around than in the past. Since 2020, the president has become more reliant on set pieces and teleprompters, so he could pay a heavier price if Trump throws him off and he’s slow to respond.

“Abortion is not on the ballot”

In another exchange of interruptions during the first debate, Biden told viewers that “abortion is on the ballot … in the court.” But his point, that Trump had appointed a conservative majority that looked poised to overturn Roe v. Wade, was barely heard over Trump’s response: “Abortion is not on the ballot. I don’t think so. There’s nothing happening there.” Two years later, of course, the Supreme Court overturned the constitutional right to abortion, fueling a massive boost for Democrats in the midterms later that year.

On Thursday, Biden will likely try to steer the conversation toward Trump’s political vulnerabilities, and abortion tops that list. But the president will also zero in on his predecessor’s recent felony convictions and the Jan. 6 riot as part of Biden’s overarching argument that Trump is a threat to democracy. Trump will aim for Biden’s weaknesses: weak polling, popular perceptions of economic malaise, and the crisis at the Southern border.


“Proud Boys, stand back and stand by.”

When asked whether he would condemn white supremacist groups when during the 2020 debates, Trump instead told the far-right Proud Boys, from the podium, to “stand back and stand by.” This raised alarm bells at the time, and many pointed out later that Proud Boys were out in force among the rioters who led the attack on the US Capitol on Jan. 6. Biden will likely try to paint Trump as being sympathetic to extremism, racism, and violence.

Trump for his part tried to brand extremism as a left-wing problem in 2020, saying, “Almost everything I see is from the left wing, Antifa groups, not from the right wing.” This argument could go further in 2024 after Republicans have seized on the recent wave of pro-Palestine student protests as symbols of liberal-driven chaos.

Are we in for a repeat of 2020? Or have these old dogs learned new tricks in the last four years? You can take our latest poll or shoot us an email to share your thoughts. And you can watch the debate on CNN at 9 p.m. EDT on Thursday, June 27.

More from GZERO Media

This summer, Microsoft released the 2025 Responsible AI Transparency Report, demonstrating Microsoft’s sustained commitment to earning trust at a pace that matches AI innovation. The report outlines new developments in how we build and deploy AI systems responsibly, how we support our customers, and how we learn, evolve, and grow. It highlights our strengthened incident response processes, enhanced risk assessments and mitigations, and proactive regulatory alignment. It also covers new tools and practices we offer our customers to support their AI risk governance efforts, as well as how we work with stakeholders around the world to work towards governance approaches that build trust. You can read the report here.

- YouTube

Brazil’s Supreme Court has sentenced former President Jair Bolsonaro to 27 years in prison for plotting to overturn the 2022 election and allegedly conspiring to assassinate President Lula. In this week's "ask ian," Ian Bremmer says the verdict highlights how “your response… has nothing to do with rule of law. It has everything to do with tribal political affiliation.”

Supporters of main opposition Republican People’s Party (CHP) attend a rally to protest against the arrest of Ekrem Imamoglu, the mayor of Istanbul and main rival of President Tayyip Erdogan, a day after the removal of the CHP's Istanbul provincial head Ozgur Celik by a court over alleged irregularities in a 2023 CHP provincial congress, in Istanbul, Turkey, September 3, 2025.
REUTERS/Umit Bektas/File Photo

After a weekend of mass protests in Turkey, a court in Ankara has postponed its decision in a highly charged case that could oust Turkey’s main opposition leader – and boost the fortunes of long-time President Recep Tayyip Erdoğan.

- YouTube

China is going all in on renewables, breaking monthly records on clean energy installation and generation. Bill McKibben tells Ian Bremmer that Beijing's bet on solar and wind gives them a competitive edge on a new episode of GZERO World.

Stephen Graham, winner of Best Lead Actor in a Limited or Anthology Series or Movie and Best Writing for a Limited or Anthology Series or Movie, Owen Cooper, Best Supporting Actor in a Limited or Anthology Series or Movie, and Erin Doherty, Best Supporting Actress in a Limited or Anthology Series or Movie, for "Adolescence", Best Limited or Anthology Series pose with their awards at the 77th Primetime Emmy Awards in Los Angeles, California, U.S., September 14, 2025.
REUTERS/Daniel Cole

8: Netflix teen murder series "Adolescence" won eight Emmys including for best limited series. Supporting actor Owen Cooper,15, became the youngest male actor to win an Emmy.