Here’s one Senate race where the Democrats face a real challenge. In Louisiana, two-term Democrat Mary Landrieu leads Republican challenger John Kennedy by only 47 percent to 44 percent with 2 percent preferring “other” and 6 percent undecided, according to a Rasmussen Reports survey conducted May 27. That’s a statistical tie given the poll’s 4.5 percent margin of error. Landrieu gets a favorable rating from 59 percent of voters compared to 37 percent who hold the opposite view but Kennedy’s favorables are 57 percent with 31 percent viewing him negatively. CQ Politics currently rates the race “Leans Democratic.”