Ask HN: Good books about modern political campaign strategy?

I'd like to get a better idea of why political campaigns do what they do, at a deep strategic level.

For example, I volunteered on a campaign a few years ago. I worked the phone bank. My task was to find other volunteers, just like myself, to work the phone bank. At no point did any of us talk with anybody other than registered party members.

From that, I realized that the underlying goal of the phone bank was not to actually call people from outside the party and convince them to change their views, as I had assumed.

Rather, the goal was to increase engagement among probable voters because -- statistically -- it meant they were more likely to show up on voting day.

Are there any books that explain political campaign strategy at this level?