NEW : Rick Perry says ` ` we might as well stay '' with Obama if Romney will be similar . NEW : A ` ` disappointed '' Perry says any Republican would be better than Obama . Sen. Jim Webb , an influential Republican , suggests other candidates bow out . The Louisiana primary election is the next contest in the Republican presidential race .
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 . The Louisiana primary Saturday is the next contest in the Republican presidential race .