Extreme Prey by John Sandford is the 26th installment in the Prey series which features Lucas Davenport.
This novel had a date of publication of April 26, 2016.
Extreme Prey book description
After the events in Gathering Prey, Lucas Davenport finds himself in a very unusual situation—no longer employed by the Minnesota BCA.
His friend the governor is just cranking up a presidential campaign, though, and he invites Lucas to come along as part of his campaign staff.
“Should be fun!” he says, and it kind of is—until they find they have a shadow: an armed man intent on killing the governor… and anyone who gets in the way.