(CNN) - Delaware state Attorney General Beau Biden said his state's Republican Senate nominee, Christine O'Donnell, "should be taken seriously."
"She should be taken seriously. [Democratic Senate nominee] Chris [Coons] is taking her seriously. My party is taking her seriously," Biden told CNN Chief National Correspondent John King in an interview set to air Wednesday.
O'Donnell has received national attention for a number of controversial comments she made in the 1990s.
"It's not about what you see on the national television shows," Biden said, seemingly referring to some of those comments. "It's about where they [Coons and O'Donnell] stand on the issues."
Biden said he's content with his decision to stay out of Delaware's Senate race this year.
"I only had one choice to make and that's to finish my job as attorney general and that's what I did," Biden said. "I'm not kicking myself."
When asked if his father, Vice President Joe Biden, might consider a 2016 presidential run, the younger Biden remained circumspect.
"He's completely committed to making sure Democrats are elected on November 2 and that this administration wins in 2012," he said. "But most importantly, brings the change that they both set out to do in cold days in Iowa."