First off, I am a liberal. This is important to know because despite my political leanings, I loved this book not because it bashes Reagan, but rather because it is fair and takes the good with the bad, of which there are plenty. After reading Cannon's "President Reagan," I expected a well-researched, exhaustive account (relying heavily on cabinet minutes and interviews) with this volume, and I was not disappointed. Still, the title is a bit misleading as the book begins as a traditional biography (at least 150 pages of back story leading up to the 1966 run), and ends with Reagan's 1980 run for the White House.
As such, this is not a "liberal" book, nor is it a right-wing puff piece. The Reagan of Cannon's sketch is flawed to be sure, but also savvy, intelligent, and ambitious. And, to my surprise, Reagan was much more pragmatic and flexible as governor than people seem to remember. Many bills he signed (including the largest tax increase for any state in U.S. history, as well as a bill liberalizing abortion law) are contrary to his image and are even more left-wing than his predecessor Pat Brown.
Overall, an engaging read that never plays favorites and doesn't try to rewrite history to anyone's advantage. Reagan is far from the simplistic boob his critics portray, but he was not a saint either. Above all, Reagan was a political animal -- always striving for the next step, which makes his "outsider" status a bit silly. He was never completely "of Washington," but he lived for politics and he never gave up in pursuit of his vision.