- The newspaper is a high-profile conservative voice in the early primary state and its endorsement is a key victory for Chris Christie
- The New Jersey governor has struggled to gain traction in polls
- Christie returns to the state on Monday to receive an endorsement of an influential Republican
- The newspaper endorsed Newt Gingrigh in 2012 and John McCain in 2008
(CNN)Chris Christie's struggling presidential campaign got a much-needed boost Saturday night when the influential New Hampshire Union Leader endorsed the New Jersey governor.