About Preston
Preston Day took a circuitous route into law. He earned a B.S. from the University of Nevada-Las Vegas before completing his J.D. at the University of Idaho College of Law. Those years established a foundation in legal research and courtroom procedure that would shape his early career.
His first legal role on record came in 2014 when he served as a judicial clerk for the Sixth Judicial District Court of Nevada. That clerkship offered daily exposure to judges’ decision-making and the cadence of trial courts. Later that year he worked as a Deputy District Lawyer in Douglas County, an entry into public-sector practice that put him on the prosecutorial track.
Over the next several years Day continued in prosecutorial roles. In 2016 he served in the Salt Lake City Lawyer's Office and two years later he took a position as a prosecuting attorney for the Salt Lake County District Lawyer. Those posts involved case preparation, courtroom appearances, and coordination with law enforcement. In 2019 he transitioned briefly to private practice as an associate at the Law Offices of Eric Swinyard, PLLC, a move that broadened his experience outside the government setting.
In 2020 he opened his own practice, founding Preston Day Law, PLLC. Establishing a firm allowed him to apply skills from both sides of the aisle: the procedural habits learned at the bench and the trial experience gained as a prosecutor. Building a small practice required him to handle intake, file management, and client counseling in addition to litigation tasks.
Day holds licenses in both Utah and Nevada. His background is rooted in courtroom work. Years as a clerk and prosecutor have given him familiarity with trial calendars, evidence rules, witness preparation and plea negotiations. He has handled the sorts of tasks often associated with prosecution teams, including drafting charging documents, arguing motions and preparing cases for trial.
Clients and colleagues describe him as someone who arrived in private practice after a steady stretch in public service. He has worked at multiple levels of local government and then moved into private practice. He currently practices through Preston Day Law, PLLC in Utah and Nevada, handling matters informed by his years as a prosecutor and courtroom clerk.
