A Las Cruces businessman has entered the contest for U.S. Senate in New Mexico, adding to a list of Republicans looking for a nomination. Las Cruces Sun News reported Thursday that 72-year-old Rick Montoya announced his candidacy at Roberto's Mexican Restaurant in Las Cruces. Montoya is the sixth Republican who announced their run for the at-large seat ahead of the June primary election. Officials say the seat was held by Democratic Sen. Tom Udall who announced in March that he would not seek a third term. He told a crowd of supporters that his campaign strategy relies on counties in southern New Mexico.