Cornell College politics professor Hans Hassell is available for analysis of Wednesday's GOP debate.

Hassell has written and researched extensively on the U.S. political system. Part of his research focuses on the so-called "Invisible Primary," where political parties narrow the field of candidates even before votes are cast.

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Newswise: Politics Professor on the Effects of The

Credit: Lisa Lewis/Envisage studios

Caption: Hans Hassell

Newswise: Politics Professor on the Effects of The

Credit: Lisa Lewis/Envisage Studios

Caption: Hans Hassell