Patrick Marleau, Ryan O'Reilly and Martin St. Louis are the finalists for the 2013-14 edition of the Lady Byng Trophy, awarded annually "to the player adjudged to have exhibited the best type of sportsmanship and gentlemanly conduct combined with a high standard of playing ability," according to the NHL.
In other words, it's the "lots of points without taking penalties" award. You can get a pretty good sense of how voters determine their thinking on this award with a simple Hockey Reference search.
Marleau scored 33 goals in 2013-14 for the San Jose Sharks, and played more minutes per night (20:31) than he took in penalties for the entire season (18). Marleau was a finalist for the Lady Byng in 2006, finishing third.
Ryan O'Reilly is the front-runner for the award. He scored 64 points in 2013-14, a career-high, amidst tough two-way minutes. He took just one penalty the entire season. It's his first time as a finalist and he seems a likely winner.
Martin St. Louis won the Lady Byng in 2013 and is a perennial finalist. Many question his candidacy this season after demanding a trade from New York, but his on-ice credentials are all there: 30 goals, 39 assists and just 10 penalty minutes in 18:29 minutes per game during the 2013-14 season.
The Lady Byng was voted on by members of the Professional Hockey Writers' Association, and it will be awarded on June 24 at the NHL Awards in Las Vegas.