MANCHESTER, N.H. (AP) — Florida Sen. Marco Rubio, a possible Republican presidential candidate, is visiting New Hampshire for the second time this month to campaign with the state's Republican candidates. Rubio, a first-term senator, will join gubernatorial candidate Walt Havenstein (HAV'-ehn-styn) for a business tour in Nashua Thursday then attend a private fundraiser with congressional candidate Marilinda Garcia in Amherst.