Buy St. Jude Medical ( STJ) and Schering-Plough ( SGP), Jim Cramer said on CNBC's "Stop Trading" segment Tuesday. Cramer believes Schering-Plough CEO Fred Hassen "has got the chance of a lifetime. ... He's got four good quarters coming." Cramer has long recommended Schering-Plough, which he owns along with St. Jude for his charitable trust, Action Alerts PLUS . "Buy Medco Health down three and a half," Cramer added. "It's like Monsanto ( MON), downgraded on value. ... These are loved stocks," he said. "We've been on that Monsanto so long it's scary," Cramer said, noting that the agriculture sector still offers attractive plays, particularly in ethanol. "Right into the election," Cramer said, the corn-derived fuel will continue to offer big returns. "Every one of these candidates needs to win every farm state. ... Until then, you have this clean ride. ... If I were running, I'd say I want super ethanol because I would win a lot of states. ... Call me cynical."