"Private Practice" is sitting this Tuesday out. Instead ABC will air a special edition of "20/20" co-anchored by Diane Sawyer and Chris Cuomo.

"A Special Edition of 20/20: The Perfect Storm" will feature "harrowing stories of determination by those caught in the storm's path." In addition to the special "20/20," ABC will air a one-hour edition of "World News With Diane Sawyer" at 6:30 p.m. ET. Then at 11:35 p.m. ET, a special edition of "Nightline" featuring the latest on Hurricane Sandy's aftermath will air with Terry Moran, Cynthia McFadden, Bill Weir and Juju Chang.

Over on NBC, "Go On" and "The New Normal" will not air new episodes as planned at 10 p.m. ET and 10:30 p.m. ET Tuesday. NBC will instead air an NBC News special. The Peacock's Thursday night comedies have also been preempted in favor a rerun of "The Voice" from Monday, October 29. The "Revolution" episode that aired on Monday, October 29 will rerun on Friday, November 2.

UPDATE: "30 Rock" will still air its election-themed episode, now on a special night, Wednesday, October 31 at 8 p.m. ET, bumping the final episode of canceled new comedy "Animal Practice" from NBC's schedule.

Here's NBC's official description of "30 Rock," "There's No I In America":
ELECTION DAY FEVER HITS "TGS" AS LIZ (TINA FEY) AND JACK (ALEC BALDWIN) GO HEAD-TO-HEAD TO WIN OVER JENNA (JANE KRAKOWSKI) AND HER POLITICAL INFLUENCE. TRACY (TRACY MORGAN) ADVISES KENNETH (JACK MCBRAYER) ON VOTING FOR THE FIRST TIME.
Realizing that Jenna (Krakowski) could decide the Presidential election, Liz (Fey) and Jack (Baldwin) stage a debate to win her support and her followers. Kenneth (McBrayer) turns to Tracy (Morgan) for advice on how to be an informed voter, while Pete (Scott Adsit) tries to recreate the magic of the 2008 election.

Stay tuned to HuffPost TV for the latest schedule changes ...

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  • "Two Parties"

    Aziz Ansari as Tom Haverford, Jim O'Heir as Associate Director Jerry Gergich, Rob Lowe as Chris Traeger, Adam Scott as Ben Wyatt

  • "Two Parties"

    Chris Pratt as Andy, Jim Irsay, Rob Lowe as Chris Traeger

  • "Two Parties"

    Chris Pratt as Andy, Nick Offerman as Ron Swanson, Adam Scott as Ben Wyatt

  • "Two Parties"

    Chris Pratt as Andy

  • "Two Parties"

    Jim O'Heir as Jerry Gergich

  • "Two Parties"

    Adam Scott as Ben Wyatt

  • "Two Parties"

    Newt Gingrich, Jim O'Heir as Jerry Gergich

  • "Two Parties"

    Newt Gingrich

  • "Two Parties"

    Aziz Ansari as Tom Haverford, Chris Pratt as Andy, Jim O'Heir as Jerry Gergich, Adam Scott as Ben Wyatt, Rob Lowe as Chris Traeger, Nick Offerman as Ron Swanson

  • "Two Parties"

    Adam Scott as Ben Wyatt, Nick Offerman as Ron Swanson, Aziz Ansari as Tom Haverford

  • "Two Parties"

    Rashida Jones as Ann Perkins, Amy Poehler as Leslie Knope, Retta as Donna Meagle

  • "Two Parties"

    Aubrey Plaza as April Ludgate, Amy Poehler as Leslie Knope

  • "Two Parties"

    Amy Poehler as Leslie Knope

  • "Two Parties"

    Amy Poehler as Leslie Knope

  • "Ron & Diane"

    Nick Offerman as Ron Swanson, Amy Poehler as Leslie Knope.

  • "Ron & Diane"

    Christie Brinkley as Gayle.

  • "Ron & Diane"

    Christie Brinkley as Gayle, Sarah Wright as Millicent, Peter Porte as Carl.

  • "Ron & Diane"

    Amy Poehler as Leslie Knope, Megan Mullally as Tammy 2

  • "Ron & Diane"

    Amy Poehler as Leslie Knope

  • "Ron & Diane"

    Lucy Lawless as Diane, Nick Offerman as Ron Swanson, Amy Poehler as Leslie Knope, Megan Mullally as Tammy 2.

  • "Ron & Diane"

    Megan Mullally as Tammy 2

  • "Ron & Diane"

    Amy Poehler as Leslie Knope, Nick Offerman as Ron Swanson.

  • "Pawnee Commons"

    Amy Poehler as Leslie Knope, Adam Scott as Ben Wyatt, Brad Hall as Wreston St. James

  • "Pawnee Commons"

    Amy Poehler as Leslie Knope, Adam Scott as Ben Wyatt, Brad Hall as Wreston St. James

  • "Pawnee Commons"

    Amy Poehler as Leslie Knope

  • "Pawnee Commons"

    Amy Poehler as Leslie Knope, Adam Scott as Ben Wyatt, Brad Hall as Wreston St. James

  • "Pawnee Commons"

    Amy Poehler as Leslie Knope, Adam Scott as Ben Wyatt

  • "Pawnee Commons"

    Adam Scott as Ben Wyatt, Amy Poehler as Leslie Knope

  • "Pawnee Commons"

    Adam Scott as Ben Wyatt, Amy Poehler as Leslie Knope

  • "Pawnee Commons"

    Amy Poehler as Leslie Knope

  • "Leslie vs. April"

    Adam Scott, Joe Biden and Amy Poehler

  • "Leslie vs. April"

    Vice President Joe Biden and Amy Poehler

  • "Leslie vs. April"

    Vice President Joe Biden, Chris Pratt, Mike Schur Amy Poehler and Adam Scott

  • "Leslie vs. April"

    Vice President Joe Biden and Amy Poehler

  • "Leslie vs. April"

    Vice President Joe Biden and Amy Poehler

  • "Leslie vs. April"

    Aziz Ansari as Tom Haverford, Nick Offerman as Ron Swanson

  • "Leslie vs. April"

    Nick Offerman as Ron Swanson

  • "Leslie vs. April"

    Amy Poehler as Leslie Knope, Aubrey Plaza as April Ludgate

  • "Leslie vs. April"

    Amy Poehler as Leslie Knope

  • "Leslie vs. April"

    Amy Poehler as Leslie Knope

  • "Leslie vs. April"

    Aubrey Plaza as April Ludgate, Amy Poehler as Leslie Knope and Rashida Jones as Ann Perkins

  • "Leslie vs. April"

    Aubrey Plaza as April Ludgate, Rashida Jones as Ann Perkins and Amy Poehler as Leslie Knope

  • "Ben's Parents"

    Nick Offerman as Ron Swanson, Ben Schwartz as Jean-Ralphio

  • "Ben's Parents"

    Rob Lowe as Chris Traeger, Retta as Donna Meagle

  • "Halloween Surprise"

    Nick Offerman as Ron Swanson

  • "Halloween Surprise"

    Lucy Lawless as Diane, Nick Offerman as Ron Swanson

  • "Halloween Surprise"

    Amy Poehler as Leslie Knope

  • "Halloween Surprise"

    Rashida Jones as Ann Perkins, Amy Poehler as Leslie Knope

  • "Halloween Surprise"

    Aziz Ansari as Tom Haverford, Nick Offerman as Ron Swanson, Aubrey Plaza as April Ludgate, Chris Pratt as Andy

  • "Halloween Surprise"

    Amy Poehler as Leslie Knope

  • "Halloween Surprise"

    Adam Scott as Ben Wyatt

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