Asked by Barbara Walters whether Lambert's perceived sexuality may have influenced "Idol" voters, DioGuardi said, "Well, first of all, I hope not ... because we should be judging on talent and viability in the music industry and they both [Lambert and Allen] had that."
Either way, she said, "I don't think that Adam [Lambert] was ever in [the closet]," DioGuardi continued. "I think he was always openly out."
When Walters asked again if the new "Idol" judge thinks Lambert "was always openly out," because that wasn't necessarily the public perception, DioGuardi countered, "I think he was. I mean from what I've seen ... I do. I never thought he wasn't."
Watch Kara DioGuardi talk about her songwriting career, why she herself never became a pop star, the "American Idol" text-voting controversy and her future with the show on "The View" Friday, 11 a.m. ET on ABC.
Calls and e-mails to Lambert's publicist for comment were not immediately returned today.
Lambert has never publicly acknowledged whether he's gay, and he's ducked questions about his sexuality since the beginning of his "Idol" run.
The 27-year-old musical theater veteran's penchant for eyeliner, nail polish and hair gel led many to believe that he is homosexual. A YouTube video in which he declares kissing girls is "not necessarily" his preference and photos of him making out with guys bolstered that assumption.
Lambert did confirm that photos posted on the "Idol"-mocking Web site votefortheworst.com, depicting him dressed in drag and kissing another man, were real and taken at the Burning Man arts festival. When asked about the photos by "Access Hollywood," he said, "I have nothing to hide. I am who I am. And this is about singing ... nothing else."
Adam Lambert Says to 'Keep Speculating'
In an interview with People.com Wednesday, Lambert offered a suggestion to those still inquiring about his sexuality.
"Calm down," he said. "Keep speculating."
For DioGuardi, it seems, the answer was so clear that speculation was never necessary.