Justin Bieber asked his Twitter fans to support Toronto Raptor Kyle Lowry’s NBA all-star campaign, but missed a key detail that cost the point guard nearly 30,000 votes.

Ahead of the NBA's All-star Game on Feb. 15, the basketball association asked fans to vote for their favourite player online. Two guards and three frontcourt players with the most votes will have a guaranteed place in the All-Star game.

Fans were told they could vote on the NBA website, through an app, by text message, or on social media. For Facebook and Twitter posts to count, however, the messages had to feature the hashtag #nbaballot.

Lowry, 28, was in the running, and had racked up 406,974 votes when preliminary results were released two weeks ago.

Hoping to support Canada's only NBA team, the 20-year-old pop star from Stratford, Ont. sent a message to his 59.5 million followers before voting closed on Monday.

"Toronto has been killin it and @Klow7 deserves to be an nba all star. Make sure to vote for him. #WeTheNorth. Good luck buddy," Bieber wrote on Twitter on Monday afternoon.

On Monday, the request had received approximately 30,000 retweets, which should all have equated to votes, but Bieber forgot to include the required hashtag.

Two weeks ago, Prime Minister Stephen Harper sent a tweet urging fans to vote for Lowry, but his message had just 5,600 retweets.

Similar tweets have been sent by Toronto Coun. Norm Kelly, Toronto Police Staff Sgt. Chris Boddy, athletic equipment retailer Sport Chek, and the Multiple Sclerosis Society of Canada, among others.

Meanwhile, Raptors ambassador and rapper Drake has been criticized for keeping quiet during the contest. The Toronto-born musician has 20 million followers, compared to Harper's 678,000.

Justin Bieber botches Lowry vote

From right to left, singers Justin Bieber, Romeo Miller, Trey Songz watch during a BBVA All-Star celebrity basketball game with the Toronto Raptors mascot at the NBA All Star Weekend in Los Angeles, Friday, Feb. 18, 2011. (AP / Jae C. Hong)