To anyone who lived during the 1950s, Joseph McCarthy is a part of the decades, mostly as a villain, though he has gained a new fan base among some of the more provocative people on the right. He is seen as the personification of the Red Scare, even though as a Senator he had no official role in the House UnAmerican Activities Committee, nor was he considered a particularly right-wing Republican prior to his infamous speech in Wheeling, West Virginia (in fact he was a Democrat until 1944).
In his book, Buckley portrays McCarthy's humble beginnings and how he originally dropped out of school to be a rabbit farmer, and how he dropped back in after the farm failed, completing four years of High School in nine months. The story also goes on to talk about his accomplishments as a Judge, Marine, and as an early red hunter.
The biography shows McCarthy's humanity as a flawed figure, but also one with great intelligence who could have been a very legitimate anti-Communist rather than a demagogue relying on insubstantial claims. Buckley seems to attribute Roy Cohn as the key to McCarthy's failings and the low road he took, which led to his censure and fall from grace. While Buckley does not praise or honor McCarthy as Ann Coulter did, he does show McCarthy as a three-dimensional and tragic figure, which is important to do as it is so much easier to make him a one dimensional villain and bogeyman archetype for everything negative about the 1950s. The fact that he could have been a force for good shows how much of a tragedy his life was.