ABC debate: 9 to 11 p.m., Saint Anselm College, 100 Saint Anselm Drive, Manchester.
Rick Santorum: "The Electorate and the Economy," 9:45 a.m., Saint Anselm College, New Hampshire Institute of Politics, Manchester; Meet-and-greet, 12:30 p.m., Homestead Grocery & Deli, 432 Boston Post Road, Amherst; Hollis Town Hall Meeting, 2 p.m., The Lawrence Barn, 28 Depot Road, Hollis.
NBC debate: 9 a.m., Capitol Center for the Arts, 44 S. Main St., Concord.
Newt Gingrich: Veterans Town Hall, 11 a.m., Wright Museum, 77 Center St., Wolfeboro; Latino Town Hall, 2 p.m., Don Quijote Restaurant, 362 Union St., Manchester; Derry Town Hall, 7 p.m., Pinkerton Academy auditorium, 5 Pinkerton St., Derry.
Jon Huntsman: Senior center, 9 a.m., Horse Meadow Senior Center, 91 Horse Meadow Road, Haverhill; Keene Town Hall, 11 a.m., Keene State College, 229 Main St.
Ron Paul: Town Hall Meeting, Church Landing at Mill Falls, 281 Daniel Webster Highway, Meredith.
Rick Santorum: Town Hall Meeting, 1 p.m., The Company of BittWare, 9 Hills Ave., Concord