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Politics this week -- former Senator Alan Dixon on Obamacare; Professor Fabio Rojas on Twitter as a predictor of elections; and education expert David Bergeron on the politics of student loans.

A former Democratic Senate leader says his party better start fixing Obamacare right away. An expert on social media says he can predict congressional elections by monitoring Twitter. And a higher-education policy maker has a series of student loan reforms in mind.

Alan Dixon  

Alan Dixon was a senator from Illinois for two terms and was chief deputy whip for the Democrats. Well known as a moderate, he has some harsh words for both parties and calls on congressional Democrats to fix Obamacare.

https://www.facebook.com/pages/US-Senator-Alan-Dixon-Memoir-The-Gentleman-from-Illinois/180738472064831

Fabio Rojas

Indiana University professor Fabio Rojas studies politics and social media. And he believes that Twitter activity can predict the outcome of close House elections

http://mypage.iu.edu/~frojas/index.html

David Bergeron

Finally, higher education expert David Bergeron of the Center for American Progress has a plan to firm up the national student loan program. The first place to start is choosing where to go to college in the first place.

http://www.americanprogress.org/about/staff/bergeron-david/bio/

Jim Hightower

Coke's Conspiracy against tap water