NASHUA, NH -- New Jersey Gov. Chris Christie vowed to make more visits to New Hampshire to stump for gubernatorial hopeful Walt Havenstein."I am going to come up here a number of times because we're going to win this baby," Christie said, shaking hands with Havenstein after an appearance at BAE Systems.Havenstein is the former CEO of BAE Systems, a UK-based global defense and security company with over 80,000 employees worldwide.