Rick Perlstein, an unabashed man of the left, first attracted wide notice seven years ago with the release of Before the Storm: Barry Goldwater and the Unmaking of the American Consensus, his engagingly written and fair-minded study of the rise of the American conservative movement in the 1950’s and 1960’s. Last month brought the much-awaited publication of the second volume of Perlstein’s projected trilogy on American conservatism. Nixonland (Scribner), as should be obvious from the title, focuses on American politics from the mid-1960’s to the early 1970’s, a time and an era dominated by Richard Nixon. The Monitor asked Perlstein...