In today's poll:
The Democrats' perfect storm continues to form on the horizon.
Sanders expands his lead in Iowa outside the margin of error, as Warren continues to slide.
"Poll: Sanders opens up lead in Iowa"
"Sen. Bernie Sanders (I-Vt.) has opened up a 7-point lead in Iowa, according to a New York Times/Siena College poll released Saturday, a strong showing in a volatile primary battle just over a week away from the state’s caucuses"