- Live updates: When is Iowa Caucus? What does it mean for Trump, Haley USA TODAY
- Iowa voters prepare to head to polls amid bitter cold as first GOP caucuses near Fox News
- What is an Iowa caucus? CBS News
- Opinion | Why This Could Be a Dangerous Year for the Iowa Caucuses The New York Times
- David Shribman: The Iowa caucus produces prairie fires, but who gets burned? Pittsburgh Post-Gazette
Source: Live updates: When is Iowa Caucus? What does it mean for Trump, Haley – USA TODAY
