Former GOP presidential candidate Fred Karger is headed to Florida to attend the Republican convention and set in motion plans to boycott the Orlando Magic NBA basketball team over anti-gay marriage donations made by its owners.

Earlier this month, Karger announced a boycott against Amway and the Orlando Magic over a donation give by its president in support of the National Organization for Marriage (NOM), the nation's most vociferous opponent of gay marriage.

Doug DeVos in 2009 gave $500,000 to the National Organization for Marriage Education Fund through his Douglas & Maria DeVos Foundation. And Richard DeVos, Doug DeVos' father, gave $100,000 in 2008 to the campaign to approve Amendment 2, Florida's constitutional amendment which defines marriage as a heterosexual union.

The Orlando Magic is owned by RDV Sports, Inc., a Michigan-based corporation set up by the DeVos family to purchase the NBA franchise.

Amway was founded by Richard DeVos and Jay Van Andel. In 1999, they established Alticor, a privately held corporation which serves as the parent company of Amway, Quixtar and Access Business Group. Doug DeVos is the president of Alticor.

Karger temporarily set aside his activism to run for the Republican presidential nomination. He bowed out of the race in June, renamed his advocacy group Rights Equal Rights and last month in Las Vegas announced the Amway/Orlando Magic boycott.

“We have conducted four previous boycotts of donors who contributed $100,00 or more to pass Proposition 8, and we settled two,” Karger said in an e-mail to supporters. “We've never boycotted a professional sports team before, but feel there are strong reasons to do so and with an 82 game season, ample opportunities to get our message out.”

In an e-mail to On Top Magazine, Karger said he was not planning on meeting with representatives from the Orlando Magic during his visit.

Karger also said he will attend the upcoming Republican convention to speak out against “third party hate groups” which are “wielding way too much power and are driving away an entire generation of Republicans” – a reference to Christian conservative groups which successfully sponsored anti-gay marriage language in the 2012 Republican Platform.

(Related: Pro-gay marriage conservatives disappointed with GOP platform's stance on marriage.)