I probably like poker more than table tennis but I don't think poker is enough of a sport to be voted for. (Although it is most definitely more of a sport than competitive eating)

Golf, darts, nearly all olympic events (sprints, shotput, long jump, etc...), poker, eating, fishing, etc... are NOT sports.  They're hobbies, competitions or games.  When you are just playing against yourself and what your opponents do have no real tangible affect on the outcome of your game, then it is not a sport.

Sport is an activity that is governed by a set of rules or customs and often engaged in competitively. Sports commonly refer to activities where the physical capabilities of the competitor are the sole or primary determiner of the outcome (winning or losing), but the term is also used to include activities such as mind sports and motor sports where mental acuity or equipment quality are major factors.

Sports, in my mind, involve some sort of physical component, competition and the ability to directly (or at least indirectly) affect your opponents game.  Hockey, football, socceer, basketball, Tennis and baseball (and the like) are all clearly sports.

While I agee on most of what you said I have one thing to say about the last line...

... what?

Poker if any game relies heavily on how your opponent plays. Poker isn't about playing for yourself... holy smokes you got the game all wrong if you think that. But yeah, I just wanted to add that. 

There is no physical component with Poker.  That is why IT is not a sport.

Sport is an activity that is governed by a set of rules or customs and often engaged in competitively.

Sport is an activity that is governed by a set of rules or customs and often engaged in competitively.

Sport is an activity that is governed by a set of rules or customs and often engaged in competitively.

Basketball is a team sport in which two teams of five active players each try to score points against one another by throwing a ball through a 10 foot (3 m) high hoop (the goal) under organized rules. Basketball is one of the most popular and widely viewed sports in the world.

Points are scored by passing the ball through the basket from above; the team with more points at the end of the game wins. The ball can be advanced on the court by bouncing it (dribbling) or passing it between teammates. Disruptive physical contact (fouls) is not permitted and there are restrictions on how the ball can be handled (violations).

Through time, basketball has developed to involve common techniques of shooting, passing and dribbling, as well as players' positions, and offensive and defensive structures. While competitive basketball is carefully regulated, numerous variations of basketball have developed for casual play. In some countries, basketball is also a popular spectator sport.

While competitive basketball is primarily an indoor sport, played on a basketball court, less regulated variations have become exceedingly popular as an outdoor sport among both inner city and rural groups.

Ultimate (commonly called Ultimate Frisbee) is a non-contact competitive team sport played between two teams of seven players, played with a 175 gram flying disc. The object of the game is to score points by passing the disc to a player in the opposing end-zone, similar to an end-zone in American football or Rugby. Players may not run while holding the disc. Ultimate is distinguished by its Spirit of the Game—the principles of fair play, sportsmanship, and the joy of play.

The objective of ultimate is to score points by receiving a teammate's pass in the opponent's endzone. The outcome of a match is usually determined by one team achieving a predetermined number of points first. This ensures that a team can only win by scoring, rather than by running the clock down.

The disc may be moved in any direction by completing a pass to a teammate. A player catching the disc must stop after a few steps to run out their momentum, and can only move their non-pivot foot. A common misconception is that a player must setup a pivot foot before they can throw the disc. In fact, the player can throw the disc before stopping within the first couple of steps after they gain possession of the disc. It is this fact that makes the "Greatest" rule possible. A "Greatest" occurs when a player jumps from within bounds to catch a disc that has passed out-of-bounds. The player must then throw the disc back in-bounds before his feet or any other part of his body touches the ground. The thrower may only catch their own throw if another player touches it in the air.

Upon receiving the disc, a player has ten seconds to pass it. This period is known as the "stall", and each second is counted out (a stall count) by a defender (the marker), who must be standing within three meters of the thrower. A player may keep the disc for longer than ten seconds if no marker is within three meters, or if the marker is not counting the stall; if there is a change of marker, the new marker must restart the stall from zero.

Snow Skiing is a group of sports and activities holding in common the use of skis, devices which slide on snow and attach with ski bindings and ski boots to people's feet. Skiing sports differ from snowshoeing in that skis slide, and they differ from ice-skating, water skiing, and in-line skating by being performed on snow. Although snowboarding shares the general characteristics of skiing sports, it evolved from surfing and skateboarding and so is not considered a type of skiing.

Skiing can be grouped into two general categories. Nordic skiing is the oldest category and includes sport that evolved from skiing as done in Scandinavia. Nordic style ski bindings attach at the toes of the skier's ski boots, but not at the heels. Alpine skiing includes sports that evolved from skiing as done in the Alps. Alpine bindings attach at both the toe and the heel of ski boots. These two categories overlap with some sports potentially fitting into both. However, binding style and history indicate that each skiing sport is more one than the other. Some skiing sports such as Telemark skiing have elements of both categories, but its history in Telemark, Norway and free-heel binding style place Telemark skiing firmly in the Nordic category.

Snowboarding is a sport that involves descending a snow-covered slope on a snowboard that is attached to one's feet using a boot/binding interface. It is similar to skiing, but inspired by surfing and skateboarding. The sport was developed in the United States in the 1960s and the 1970s and became a Winter Olympic Sport in 1998. Some of its pioneers include: Craig Kelly, Tom Sims, Jake Burton Carpenter, and Terry Kidwell. It is constantly increasing in popularity.