The 1984 Reelection of Peter Rodino was an uncompetitive affair in a district that had significantly changed demographics from when he first won it.
Originally a seat dominated by Italians and Wealthy African Americans in the suburbs, Rodino's seat by 1984 encompassed all of Newark, Irvington, the Village of East Orange, the City of Orange, and hillside—being dominated by African Americans.
This change was mostly a result of White and African American flight, with Wealthy Italian and African American residents leaving for the suburbs in western Essex county, with only Newark's Downtown remaining as the economic center of the district.
To this effect, The African American community predominated in the Oranges, Irvington, Hillside and Southwestern and Central Newark, with the remaining Italian populations being mainly concentrated in the Ironbound & the north ward, with a sprinkling in the City of Orange
Despite these changing demographics, Rodino—Who came to national prominence as a result of the Nixon impeachment—was never in any danger of losing; this was because he was inmensly popular with the African Americans in the district, being seen as an effective force for them.
This racial and wealth composition showed up in the presidential results, as while Mondale won the seat, he underperformed in the Whiter more suburban areas of the city of Orange, Hillside, and Irvington—in addition to the more italian areas of the North Ward and the Iron Bound