Robert Hogan, political science professor, said a visit to Louisiana from either major-party presidential candidate is unlikely in the final days before the Nov. 4 elections.He said Sen. John McCain is unlikely to visit because he is “consistently ahead” in early polls. Hogan said Sen. Barack Obama is unlikely to visit for the same reason.”Even Barack Obama, who has a number of resources, uses those resources in a wise way in places where he has a chance to win,” Hogan said.——Contact Lindsey Meaux at [email protected]