Santorum said he expects to do better in coming primaries and caucuses , including Louisiana on Saturday . NEW : Rick Santorum says `` we might as well stay '' with Obama if Romney will be similar . NEW : A `` disappointed '' Romney says any Republican would be better than Obama . Sen. Jim DeMint , an influential conservative , suggests other candidates bow out . TL;DR The GOP presidential race is shaping up to be a battle of the establishment and Tea Party forces.
NEW : Rick Santorum says `` we might as well stay '' with Obama if Romney will be similar . NEW : A `` disappointed '' Romney says any Republican would be better than Obama . Sen. Jim DeMint , an influential conservative , suggests other candidates bow out . TL;DR The GOP presidential race is shaping up to be a battle of the establishment and Tea Party forces.