FILE - In this Aug. 29, 2012 file photo, Republican presidential candidate, former Massachusetts Gov. Mitt Romney speaks at the American Legion National Convention in Indianapolis. When Romney addresses the Republican convention Thursday night, he'll do it from a stage that puts him a little bit closer to the crowd inside the convention hall. His campaign hopes the evening ends with Americans feeling a little bit closer to the Republican presidential candidate, too. (AP Photo/Evan Vucci, File)

TAMPA, Fla. (AP) -- Republican presidential nominee Mitt Romney is planning to tell the nation that he wishes President Barack Obama had succeeded but that the time has come to move beyond the disappointments of the last four years.
In excerpts from his Thursday night speech released by his campaign, Romney says that Obama had promised to slow the rise of oceans and to heal the planet, an apparent reference to efforts to stem global warming. Romney says that his own promise is to help voters and their families.
Romney also is making the case that the company he started at age 37, Bain Capital, grew into a great American success story. Democrats have criticized Romney's tenure at the private equity firm.