Democratic prosecutors making the case that Donald Trump incited a deadly insurrection by encouraging his supporters to march on the US Capitol warned the Senate on Thursday that if it fails to convict the former president, “he can do this again,” Reuters reported.

The first three days of Trump’s impeachment trial focused on his fiery words to supporters in the weeks leading up to the Jan. 6 attack, when he falsely claimed that his election defeat by Democrat Joe Biden was the result of fraud and that the crowd needed to “fight” and “stop the steal.”

The Democrats appear highly unlikely to secure a conviction and bar Trump from ever again holding public office given that only six Republicans voted with Democrats in the 100-seat chamber to proceed with the trial.

“If he gets back into office and it happens again, we’ll have no one to blame but ourselves,” lead impeachment manager Representative Jamie Raskin told the Senate on Thursday, wrapping up the prosecution arguments.

Fellow Democratic Representative Ted Lieu told the senators he worries about what would happen if Trump runs in 2024 and loses.

“I’m not afraid of Donald Trump running again in four years. I’m afraid he’s going to run again and lose, because he can do this again,” Lieu said.

The nine House of Representatives impeachment managers have argued that Trump planted the seeds for the riot by encouraging violence and making false claims about widespread electoral fraud long before Jan. 6, and must be held accountable for what happened.

Five people including a police officer died in the riot. Two more police officers involved in the response died by suicide in the days afterward.

Although the prosecutors’ arguments were generally praised by both parties, some Republican senators said they were still not convinced.

During a break in the proceedings on Thursday, Senator James Lankford told reporters that the managers failed to connect the dots between Trump and the rioters.