Countdown To Iowa Caucus: Compelling Questions That Remain

Less than a week till the Iowa caucuses, and among the questions. Can Ted Cruz do anything drastic during Thursday night’s GOP debate to break the Donald Trump momentum?

Can Bernie Sanders compel enough of those young adults that overwhelmingly support him (and are the only reason he leads in certain polls in Iowa) to actually head to a caucus, and are enough of them even registered?

Will there be a snowstorm in Iowa Monday night that will scramble the entire political paradigm?

And a surprise guest tonight, Sheriff Joe Arpaio is in Iowa to campaign with Trump.

ABC’s Josh Haskell joined us from Des Moines.