Outgoing Oregon governor Tom McCall, who had decided not to run in 1968, had pledged to Packwood a year earlier that he would not challenge him in 1974. But as his term as governor ended, McCall began reconsidering his decision, believing he would bring more integrity to the job. In March 1974, at a dinner party held at Packwood's Washington D.C. home in McCall's honor, McCall informed Packwood that he would challenge him. The news of McCall's change of plans soon reached the media. Eventually, McCall decided that he had little chance against Packwood, who had similar positions to his own and had a reputation for ruthless campaigning that McCall did not share. McCall did not run, and Packwood was unopposed in the Republican primary.