Murphy had the support of Schmuck Schumer, Kirsten Gillibrand, Hillary Clinton, Barack Obama, Nancy Pelosi in the person of Steny Hoyer, and won by a miniscule amount of votes. When the national inflation rate is in the upper teens late next year, none of that support will help--and it will probably hurt Murphy's chances for re-election.
Having said that, Tedisco did himself no favors by running the campaign he did. His advisors should never be hired by a Republican ever again, to run for something as miniscule as dogcatcher.