I tend to agree with the other review here - I enjoyed the authors previous two novels, but found them just a little hyperbolic in terms of characterisation, while at the same time the plots were a little threadbare as if to compensate - while screwball psychos are lovely, they need to be more than set pieces to be admired.
Here though, the backdrop of a typical wholesome american election campaign provides sufficient impetus for a twisting, multi-layered plot, and the appearance of fresh characters with complex reasons to exist other than to provide a cheap, screwy death. At the same time, Mr. Dorsey hasn't lost his ear for a well-turned line of dialogue, nor the ability to squeeze amusement out of even his minor players.
If Hiaasen, Leonard, James Hall etc. are your bag, (and if not, why not?), then I'd suggest this is well worth your time and effort, and hope that Mr. Dorsey continues the great strides forward evident here - if so, it won't be too long before he is up with the major players of the genre. More power to his elbow.