But Baosteel is understood to be the frontrunner.
Prosecutors cleared Lee Myung-bak of wrongdoing - but his rival still hopes to seizeseeon popular skepticism about frontrunner.
Perry also hopes to win support from economic conservatives who have favored the frontrunner for the Republican nomination, former Massachusetts governor Mitt Romney.
Arizona Senator John McCain emerged from Super Tuesday as his party's clear frontrunner, with 707 of the nearly 1,200 delegates needed to secure the nomination.
Her role in the Blind Side as a feisty Southern woman who takes in a homeless teenager has already won her a Golden Globe, and she is the Oscar frontrunner.
