During the first televised presidential debate in 1960 Richard Nixon

"The typical answer to that question is 1960, Kennedy v. Nixon. In fact, the first televised debate occurred four years earlier, when Democratic candidate Adlai Stevenson challenged incumbent Republican president Dwight Eisenhower—but those two men did not appear in the debate"

Explanation:

i really dont know the answer

the two major parties acting together and cooperating when making decisions is bipartisan