Trump, Clinton ahead in tracking poll and other headlines

Trump, Clinton still way ahead, weekly tracking poll shows. (NBC News)

Bernie Sanders hits the road to try to solidify his Iowa ground game. (New York Times)

Republican operatives are trying to help Bernie Sanders. (Bloomberg Politics)

Cruz super PAC prepares for millions of dollars in TV ads. (AP)

Obama eyes ‘audacious’ use of executive power in final year. (The Hill)

Crowd calls for Michigan governor’s arrest in protest at his home. (USA Today)

Still no luck in hunt for 12 Marines after Hawaii crashes. (AP)

What are you reading this morning? Let us know in the comments, please.