MINNEAPOLIS (WCCO) — These are the four stories you need to know about from Thursday, Dec. 15. They include more developments in alleged Russian interference in the presidential election, and a deadline in signing up for the Affordable Care Act.

Principal Accused Of Child Porn

The Principal at Chanhassen High School is expected in court this morning. Police say 44-year-old Timothy Dorway had child pornography. He was arrested Tuesday after investigators searched his home and the high school. The district told parents none of their students are connected to the investigation.

More Evidence Of Russian Tampering

President-elect Donald Trump continues his thank-you tour in Pennsylvania amid new revelations about Russia’s meddling in the election. U.S. intelligence sources now believe Russian President Vladimir Putin was personally involved in the effort. Trump has dismissed the allegations.

Obamacare Deadline Looms

Thursday is the deadline to enroll for Obamacare that will begin on New Year’s Day. Earlier this month, more than 4 million people chose 2017 plans on the federal exchange. Republicans have vowed to repeal the law as soon as Congress returns in January.

Gophers Cruising Toward Championship

On Thursday, the Gopher volleyball team will play for a chance to go to the national championship game. Minnesota takes on Stanford at 6 p.m. as they make it to their second straight Final Four. If the Gophers win, they’ll play either Nebraksa or Texas for a national title.