Sunday on 'This Week': Gov. John Kasich, Sen. Marco Rubio, and Sen. Bernie Sanders

PHOTO: Pictured (L-R) are presidential candidates Sen. Marco Rubio in Manchester, N.H., Feb. 6, 2016, Ohio Gov. John Kasich in Keene, N.H., Jan. 30, 2016 and Sen. Bernie Sanders in Des Moines, Iowa, Jan. 25, 2016.ABC | AP Photo | Getty Images
Pictured (L-R) are presidential candidates Sen. Marco Rubio in Manchester, N.H., Feb. 6, 2016, Ohio Gov. John Kasich in Keene, N.H., Jan. 30, 2016 and Sen. Bernie Sanders in Des Moines, Iowa, Jan. 25, 2016.

Fresh off Saturday night’s Republican debate in South Carolina, GOP presidential candidates Gov. John Kasich and Sen. Marco Rubio come to “This Week.”

Plus, after his double-digit win in New Hampshire over Hillary Clinton, Sen. Bernie Sanders comes to “This Week” Sunday.

And the powerhouse roundtable debates the week in politics, with Yahoo News national political columnist Matt Bai, ABC News contributor and ESPN senior writer LZ Granderson, ABC News contributor and Weekly Standard editor Bill Kristol, and ABC News contributor and Republican strategist Ana Navarro.

And in our Sunday Spotlight, NASA astronaut Commander Scott Kelly joins “This Week” from the International Space Station to discuss his historic year in orbit.

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