Newt Gingrich says he plans to finish a week of campaigning in North Carolina but acknowledges that he needs to look realistically at where it stands.

Gingrich spoke Tuesday night to about 100 supporters in Concord, N.C., as he learned that he was losing another handful of Republican presidential primaries. He promised that his campaign will do what is best to fight for conservative principles and beat President Barack Obama in November.

Gingrich trails Mitt Romney in convention delegates and fundraising, yet he has vowed for weeks to campaign until the party's late-summer convention in Florida.

Gingrich is carrying more than $4.3 million in debt and has been spending more money than he is taking in.