Sunday shows preview: One week to Iowa

With just over one week to go until the Iowa caucuses, the presidential races will be the talk of the town on the Sunday shows this week.
The shows will feature appearances from some of 2016’s top contenders, who will try to shore up support heading into the first-in-the-nation voting.
Republican presidential front-runner Donald TrumpDonald TrumpTrump: 'I'm considering' going after Clintons' marriage Ivanka Trump stars in first campaign ad for her father Clinton camp on Trump cameo in Playboy film: 'a strange turn of events' MORE, who is neck and neck with rival Ted Cruz in Iowa, will make two appearances on the day.
The businessman on Saturday said he was so confident heading into Iowa, that he could “shoot somebody and I wouldn’t lose voters.”
Sanders recently overtook Clinton in Iowa according to a CNN-ORC poll, but other surveys still show him trailing the former secretary of State by a narrow margin.
Here are the rest of Sunday’s expected guests:
ABC’s “This Week”: GOP presidential hopeful Jeb Bush, who has concentrated most of his efforts on New Hampshire, headlines the program, followed by Sanders.
CBS’ “Face the Nation”: Trump will call into the show to gauge his chances in the Iowa caucus, with Sanders speaking afterwards.
CBS will also release new Battleground Tracker polls from Iowa, New Hampshire and South Carolina.
CNN’s “State of the Union”: Bush makes his second appearance of the day, followed by fellow GOP presidential contender Chris Christie, who has recently slipped in New Hampshire polls.
“Fox News Sunday”: Republican White House candidate Marco Rubio headlines the program to forecast his chances in the Hawkeye State.
He will be followed by Rep. Adam Schiff (D-Calif.) and Sen. James Lankford (R-Okla.), who both sit on intelligence committees in Congress and will discuss recent developments in international affairs.
NBC’s “Meet the Press”: Clinton rounds out the day with an appearance on the program, followed by Sanders, Trump and former Defense secretary Robert Gates.