Newly-minted Democratic Sen. Arlen Specter will do his first long-form interview when he appears this Sunday on NBC's "Meet the Press."

Both host David Gregory and the show's producer, Betsy Fischer, verified the appearance in back-to-back tweets Wednesday.

Gregory tweeted:
Coming up this Sunday on Meet the Press: Senator Arlen Specter. In his first interiew since leaving the GOP, he will join me Sunday.

While Fischer tweeted:
Newly minted Democratic Senator Arlen Specter does his first TV interview since leaving the GOP - Sunday, live on Meet the Press.

The broadcast will be the first time Specter will have been pressed on his bolt to the Democratic Party after having answered some questions at a press conference Tuesday afternoon.