BATON ROUGE, La. (AP) — Polls have closed in Louisiana as Republican U.S. Sen. Bill Cassidy tries to reach a high hurdle. He’s seeking to defeat 14 challengers in the primary without needing to continue his campaign through a December runoff. Cassidy would need to take more than 50% of the vote outright Tuesday to reach a second term without another month of campaigning. Also on Louisiana’s ballot are six U.S. House races, seven constitutional amendments and a parish-by-parish decision on whether to legalize sports betting. Only a handful of Cassidy’s opponents actively campaigned and did any fundraising to win the position. Most of the high-profile Democratic endorsements and campaign donations went to Shreveport Mayor Adrian Perkins.