He was as recognizable by his mellifluous voice as by his rumpled appearance. Everett McKinley Dirksen was one of the most colorful American politicians of the twentieth century and was considered by some the most powerful man in Congress. Now Byron Hulsey takes a new look at the senator from Illinois to show how his interactions with the White House made him a pivotal figure in American politics during the Cold War era. Hulsey traces Dirksen's relationships with four presidents to show how the senator shifted from being a major Republican critic of Truman to an ardent Republican supporter of LBJ. Dirksen learned "suprapartisan politics" from Eisenhower and became Ike's most trusted confidant on Capitol Hill; then as Senate Minority Leader he played a key role in furthering the ambitious goals of the Johnson administration. Hulsey analyzes the reasons for Dirksen's dramatic policy reversals, telling how the senator who in 1950 warned of the dangers of a leviathan executive came to embrace the power of the presidential office to provide for the social welfare, contain the spread of communism, and guarantee civil rights. Drawing on primary sources at the Johnson presidential library and the Dirksen Congressional Center, Hulsey shows how the senator combined legislative craftsmanship with the ability to get bills passed. He links Dirksen to the issues and events that shaped the 1950s and 1960s and tells how the Johnson-Dirksen coalition moved domestic policy forward through civil rights legislation but ran aground on the insurmountable problem of Vietnam. Hulsey also uses Dirksen's career to explore change, continuity, and conflict in the Republican Party over two decades. He explains how the GOP evolved through internal political and ideological tensions from the Taft-Eisenhower contest through the McCarthy era to the beginning of Nixon administration, revealing Dirksen's role in that process. By the time of Dirksen's death in 1969, the Vietnam War, the explosion of urban riots, and President Nixon's preference for the politics of resentment put an end to the suprapartisan spirit. Hulsey's book recreates a Washington milieu the likes of which may never be seen again, offering a lens for viewing postwar American politics while painting the definitive political portrait of one of our most remarkable leaders.