Few surprises on Super Tuesday, Arizona Independent Kyrsten Sinema won't run for re-election, and Scientists discover sources of Parkinson's disease, Tourette's syndrome, and OCD.

Bernie Sanders is eyeing Michigan as a must-win in today's primaries. Jonathan Easley from The Hill takes us behind the numbers.

Bernie Sanders wins New Hampshire primary, prosecutors quit Roger Stone case after Justice Department seeks less prison time, and dog alerts Michigan family to carbon monoxide leak inside home.

Democrats make last pitches in New Hampshire, coronavirus death toll surges as fears grow for Chinese economy, and social media linked to mental distress in teenagers.

James Pindell from the Boston Globe explains why and how the 2020 Democrat race is about Iowa only Iowa.

Reid Epstein from the Wall Street Journal explains why Beto O'Rourke's past could hurt skews his perception among Democrats.

Janet Hook from the Wall Street Journal has a look at how the President is doing at picking primary winners.

Ben Kamisar from The Hill explains why the GOP hopes for a crowded Democratic primary field.

With the start of primary season more and more people are worried about our election systems. Dan Boylan from the Washington Times and Gordon Deal discuss.

Gene Mueller from WTMJ gives us a look behind last night primary results.

Jason Stein from The Milwaukee Journal Sentinel breaks down the major storylines heading into tonight's competitive Wisconsin primaries.

Haley Dover from the Burlington Free Press explains why lawyers are out in force today in New Hampshire.