CONCORD, N.H. (AP) — With the hours slipping away before New Hampshire’s presidential primary, Republican rivals fought on multiple fronts Sunday to slow Mitt Romney’s march toward his party’s nomination.

Their efforts were on display in a combative morning debate and in campaign stops across the state amid the growing belief that the window to stop Romney’s momentum was closing. Having narrowly won last week’s Iowa caucuses, the former Massachusetts governor is the overwhelming front-runner in New Hampshire’s election Tuesday — the first presidential primary election in the nation — and is poised to do well in the subsequent contests.