Republican Jack Ciattarelli and the top Democratic candidate are viewed favorably by a similar percentage of voters, a poll shows.

President Donald Trump endorsed Jack Ciattarelli for Governor of New Jersey, but who exactly is "Jack"? You don't know jack about Jack. Timeline. Giacchino Michael "Jack" Ciattare

Political observers say endorsements from unions, celebrities and politicians could matter more in the crowded races of Tuesday's primaries where turnout could be low.