Kentucky Sen. Rand Paul (R) will travel to New Jersey next week to campaign for Republican U.S. Senate nominee Steve Lonegan, but Gov. Chris Christie (R) won't be there to greet him.

Christie announced Tuesday that he plans to go away with his wife for her birthday instead of joining Paul at a rally to boost Lonegan in the state's Oct. 16 special U.S. Senate election. Paul, a possible 2016 presidential candidate, is traveling to the Garden State in an effort to boost Lonegan, a tea party favorite who has been trailing Democrat Cory Booker in the polls.

Lonegan's campaign described the Paul event, which will be held at a banquet hall in the suburban Union County community of Clark, as a "Liberty and Victory Rally." Lonegan, a former mayor of Bogota, N.J., spent seven years as the head of the New Jersey chapter of the Koch brothers-affiliated Americans for Prosperity, and has been endorsed by Christie and New Jersey's Republican establishment in the race.

Christie said Tuesday in a video posted on his state YouTube channel that he plans to skip the Paul rally. The move comes weeks after Christie, also a possible 2016 presidential candidate, publicly feuded with Paul on a series of domestic and foreign policy issues. The back-and-forth included Paul accusing Christie of being focused on government spending, while Christie described Paul's foreign policy views as "dangerous."

In the YouTube clip, Christie said he made the decision to skip the Paul event because he wanted to celebrate the 50th birthday of his wife, Mary Pat. Christie said he planned to take his wife away for the weekend and could not make the event. Christie, who is known to keep the details of his family life private, did not disclose where he'll go on the vacation.

"In a choice between Mary Pat Christie and Rand Paul, it's no choice, I'll be with Mary Pat," Christie said.

Christie's decision comes as he is being challenged by Democrat Barbara Buono in his bid for a second term. Buono, who has been trailing Christie in the polls, has criticized Christie's support for Lonegan, saying he's too conservative for New Jersey. Christie last week distanced himself from Lonegan's comments regarding Booker's sexual orientation.

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  • Massachusetts -- Scott Brown vs. Elizabeth Warren: $77,270,031

    Republican U.S. Sen. Scott Brown, left, gestures as he answers a question during a debate against Democratic challenger Elizabeth Warren, right, in Lowell, Mass. on Monday, Oct. 1, 2012. (AP Photo/The Boston Herald, Matt Stone, Pool) <a href="http://www.opensecrets.org/bigpicture/topraces.php?cycle=2012&display=currcands" target="_blank">Source: Center For Responsive Politics</a>

  • Connecticut -- Chris Murphy vs. Linda McMahon: $59,932,468

    Democratic candidate, U.S. Rep. Chris Murphy, D-Conn., left, and Republican candidate for U.S. Senate Linda McMahon, right, shake hands after a debate in Hartford, Conn., Thursday, Oct. 18, 2012. (AP Photo/Jessica Hill) <a href="http://www.opensecrets.org/bigpicture/topraces.php?cycle=2012&display=currcands" target="_blank">Source: Center For Responsive Politics</a>

  • Ohio -- Josh Mandel vs. Sherrod Brown: $43,351,434

    U.S. Sen. Sherrod Brown, D-Ohio, right, shakes hands with Republican challenger, Ohio state treasurer Josh Mandel, after their debate at the City Club in Cleveland Monday, Oct. 15, 2012. (AP Photo/Tony Dejak) <a href="http://www.opensecrets.org/bigpicture/topraces.php?cycle=2012&display=currcands" target="_blank">Source: Center For Responsive Politics</a>

  • Pennsylvania -- Tom Smith vs. Bob Casey: $35,547,862

    Republican Tom Smith, left, speaks as Democratic U.S. Sen. Bob Casey looks on during a debate between Pennsylvania's candidates for U.S. Senate, at the WPVI-TV studio, Friday, Oct. 26, 2012, in Philadelphia. (AP Photo/Matt Rourke) <a href="http://www.opensecrets.org/bigpicture/topraces.php?cycle=2012&display=currcands" target="_blank">Source: Center For Responsive Politics</a>

  • Virginia -- Tim Kaine vs. George Allen: $32,340,418

    Republican candidate George Allen, right, looks on as Democratic candidate Tim Kaine speaks during a Senatorial debate for the Virginia U.S. Senate seat on Thursday, Sept. 20, 2012 in McLean, Va. (AP Photo/ Evan Vucci) <a href="http://www.opensecrets.org/bigpicture/topraces.php?cycle=2012&display=currcands" target="_blank">Source: Center For Responsive Politics</a>

  • Missouri -- Todd Akin vs. Claire McCaskill: $27,429,980

    Republican Rep. Todd Akin and Democratic Sen. Claire McCaskill shake hands after the end of the second debate in the Missouri Senate race Thursday, Oct. 18, 2012, in Clayton, Mo. (AP Photo/Emily Rasinski) <a href="http://www.opensecrets.org/bigpicture/topraces.php?cycle=2012&display=currcands" target="_blank">Source: Center For Responsive Politics</a>

  • Wisconsin -- Tommy Thompson vs. Tammy Baldwin: $24,787,727

    Republican candidate for Wisconsin's U.S. Senate seat, former Gov. Tommy Thompson, left, participates in a debate against Democratic candidate U.S. Rep. Tammy Baldwin at Marquette University Friday, Oct. 26, 2012, in Milwaukee. (AP Photo/Jeffrey Phelps) <a href="http://www.opensecrets.org/bigpicture/topraces.php?cycle=2012&display=currcands" target="_blank">Source: Center For Responsive Politics</a>

  • Florida -- Bill Nelson vs. Connie Mack IV: $24,699,817

    Democratic candidate for Senate U.S. Sen. Bill Nelson, D-Fla., right, gestures during a debate against Republican candidate Rep. Connie Mack IV, R-Fla., left, Wednesday, Oct. 17, 2012, in Davie, Fla. (AP Photo/Alan Diaz) <a href="http://www.opensecrets.org/bigpicture/topraces.php?cycle=2012&display=currcands" target="_blank">Source: Center For Responsive Politics</a>

  • Montana -- Jon Tester vs. Denny Rehberg: $22,874,724

    U.S. Sen. Jon Tester greets supporters to announce his win on Wednesday, Nov. 7, 2012, in Great Falls, Mont. Tester prevailed in a tight re-election battle, handing Republican U.S. Rep. Denny Rehberg his first election loss since 1996. (AP Photo/Michael Albans) <a href="http://www.opensecrets.org/bigpicture/topraces.php?cycle=2012&display=currcands" target="_blank">Source: Center For Responsive Politics</a>

  • Nevada -- Dean Heller vs. Shelley Berkley: $20,817,344

    Republican Sen. Dean Heller, left, and Rep. Shelley Berkley, D-Nev., arrive for their debate, Thursday, Oct. 11, 2012, in Las Vegas. (AP Photo/Julie Jacobson) <a href="http://www.opensecrets.org/bigpicture/topraces.php?cycle=2012&display=currcands" target="_blank">Source: Center For Responsive Politics</a>