Tierney, the sitting state Attorney General, won a crowded Democratic primary over state senators Severin Beliveau and William Diamond, as well as David Redmond, the chief of staff of incumbent governor Joseph E. Brennan. McKernan faced only conservative activist Porter Leighton in the GOP primary, and dispatched him with relative ease.
The future of the Power Plant had been placed up for statewide referendum in 1980 and again in 1982. McKernan and Menario opposed the closure of Maine Yankee, while Tierney and Huber supported the efforts to close the Plant in 1988.[1]