BALTIMORE — The three candidates in Major League Baseball's first contested election for a new commissioner in 46 years made presentations to the 30 teams Wednesday, a day ahead of the vote. MLB Chief Operating Officer Rob Manfred, Boston Red Sox Chairman Tom Werner andMLB Executive Vice President of Business Tim Brosnan addressed team executives at a hotel a few blocks from Camden Yards in attempts to gain the 23 votes needed to replace Bud Selig in January. They spoke for about an hour apiece, including PowerPoint presentations, and the owners attended an evening reception at the B&O Warehouse behind the ballpark's right-field wall.