Former President Donald Trump. Photo: USA Today

Judge Juan Merchan already denied similar bids from Trump twice, first last August and again in April. Each time, Trump argued that the daughter's work for Democratic political candidates through marketing agency Authentic Campaigns created either an actual conflict of interest or the appearance of one. 

This time, Trump suggested there were new grounds for Merchan to recuse from the case because Harris has moved to the top of the Democratic presidential ticket. His legal team said in a letter to the court that the judge's daughter has a "long-standing and extremely beneficial" relationship with Harris, including through Authentic Campaigns' role as the top vendor for Harris' 2020 presidential campaign.

Merchan ruled that he welcomed "zealous advocacy and creative lawyering," but he warned Trump's lawyers repeatedly their advocacy cannot come at the expense of professional responsibility. Merchan ruled Trump's lawyers relied on arguments "rife with inaccuracies and unsubstantiated claims."

"As has been the standard throughout the pendency of this case, this Court will continue to base its rulings on the evidence and the law, without fear or favor, casting aside undue influence," Merchan wrote in his ruling. "Defendant has provided nothing new for this Court to consider. Counsel has merely repeated arguments that have already been denied by this and higher courts."

Trump was found guilty on May 30 of 34 felony counts of falsifying business records to cover up paying hush money to porn star Stormy Daniels ahead of the 2016 presidential election. The jury determined Trump falsified the records as part of a conspiracy to unlawfully interfere in that election.