Race injected itself deep into the Republican presidential nomination Sunday after Donald Trump refused to condemn the Ku Klux Klan and Florida Sen. Marco Rubio, one of his chief competitors, said that makes him unqualified to lead the GOP into the election.
Speaking in Loudoun County at a rally interrupted by technical difficulties and protesters, Mr. Rubio said Mr. Trump’s refusal to distance himself from some of his more extreme supporters is dangerous for a party trying to reach out to voters it lost in 2008 and 2012.
“We cannot be a party that nominates somebody who refuses to condemn white supremacists and the Ku Klux Klan,” Mr. Rubio said.
Mr. Trump, speaking on CNN’s “State of the Union,” said he did not know David Duke, the former KKK leader and white supremacist who has endorsed him, and declined to unilaterally condemn groups without knowing more about them.
Asked specifically about the KKK, he again declined.