NEW : that , `` If Gov . With 83 % of the vote in , Romney has 83 % of the primary vote in Puerto Rico . Illinois : Romney and Obama are locked in a tight race in Illinois . Romney now has 518 delegates , more than twice anyone else , CNN estimates . Obama campaigned in Illinois , while Romney is in Indiana .
NEW : With 83 % of the vote in , Romney has 83 % of the primary vote in Puerto Rico . Illinois : Romney and Obama are locked in a tight race in Illinois . Romney now has 518 delegates , more than twice anyone else , CNN estimates . Obama campaigned in Illinois , while Romney is in Indiana .