Rep. Tom MacArthurThomas (Tom) Charles MacArthurChamber-backed Democrats embrace endorsements in final stretch Republican David Richter wins NJ primary in race to challenge Rep. Andy Kim What to watch in New Jersey's primaries on Tuesday MORE (R-N.J.) is projected to hold onto his House seat, earning a second term in office.

The freshman lawmaker is expected to defeat Democrat Frederick LaVergne in a race for New Jersey’s 3rd District seat. LaVergne previousy challenged Randolph in 2014 as an independent.

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MacArthur ran unopposed in the GOP primary and won the seat in 2014 following the retirement of Rep. Jon Runyan (R).

MacArthur previously served as the mayor of Randolph, N.J.