Republican strategist Karl Rove says former Vice President Joe Biden should not be ruled out of mounting a successful presidential bid despite the allegations made against him in the last weeks.

Rove, who was deputy chief of staff during former President George W. Bush’s administration, argued in a Wall Street Journal op-ed that no matter how much the liberal wing of the Democratic Party wants to tear down Biden, he still has an argument to make that he is the most formidable candidate in the field capable of uniting a broad coalition of voters that could rival the Trump campaign.