WILMINGTON, N.C. (AP) — Donald Trump has returned to North Carolina to stump in the southern battleground state that both Democrats and Republicans are treating as increasingly critical to victory in November. But on Saturday he campaigned in Wilmington without Lt. Gov. Mark Robinson. Trump has long praised the GOP gubernatorial nominee, but his campaign is now distancing itself following a CNN report about Robinson’s alleged posts on a pornography website’s message board. Robinson has denied writing the posts and says he’s not leaving the race. State Republican officials have stood by Robinson, whose decision to keep campaigning could threaten GOP prospects in other key races, including Trump’s efforts in a battleground state he previously won twice.