Rick Santorum announced Tuesday that he is suspending his presidential campaign, leaving Mitt Romney to wrap up the Republican nomination to take on President Obama despite still having GOP hopefuls Newt Gingrich and Ron Paul in the race.

AEI political expert Henry Olsen explains how Rick Santorum can capitalize on his victories last night by appealing to 'somewhat conservative' voters.

AEI Election Watch 2012: American Enterprise Institute experts Karlyn Bowman and Henry Olsen discuss the results of contests in Alabama and Mississippi and preview key next battles – Puerto Rico and Illinois – in the 2012 GOP presidential contest.

AEI Election Watch 2012: American Enterprise Institute experts Karlyn Bowman and Henry Olsen discuss the results of Super Tuesday and preview what's next in the 2012 GOP presidential contest.

Republicans are choosing between a candidate from a Belmont that's doing just fine and one who claims ties with a Fishtown that isn't what it used to be. Not an ideal choice.

President Barack Obama and Republican presidential contender Rick Santorum have finally managed to find something they agree on. Despite their many differences, they see eye to eye on the notion that the tax system should favor manufacturing over other sectors of the economy.