If former Arkansas Gov. Mike Huckabee ends up winning the Republican nomination for president, much of the credit could be laid at the doorstep of Alex and Brett Harris, a pair of homeschooled evangelical twin teen prodigies in a suburb south of Portland, Oregon.

The 19-year-old twins are the co-founders, along with 62-year-old Kentucky volunteer Bill Goins, of Hucksarmy.com, an until-recently under-the-radar national grassroots effort that is growing into a powerful component of Huckabee's support network. It was an e-mail blast from the twins and their volunteer colleagues that won Huckabee the endorsement of roundhouse-kicking GOP celeb Chuck Norris – and the teen activists are building a highly organized national army of ground troops to support their candidate.

"It's a bit of an outgrowth of the Rebelution.com, our other project," Alex says. "We call it a teenage rebellion against low expectations – what we're doing for Huckabee is a little bit of the same rebellion against low expectations."

The effort could turn out to be crucial for Huckabee's campaign as it expands its territory; it hasn't had the finances to build its own official campaign infrastructure throughout the 24 states holding primaries on Feb. 5. Hucks Army is also notable for the demographic of its leaders, who can speak the language of a voting block crucial to their candidate. Young voters turned out in record numbers in both Iowa and New Hampshire. More important for Huckabee, who won his party's nomination caucus in Iowa, was that 60 percent of the Republicans who turned up to caucus were evangelicals. South Carolina is also expected to be a bonanza state for the candidate because of its evangelical population.

The Harris brothers got started with online organizing in 2005 with Therebelution.com, a burgeoning Christian youth conference, blog and book-selling business. The boys define the term as "a teenage rebellion against low expectations of an ungodly culture." Their message: Young people should reject the idea that their teen years are meant for goofing off, and instead find challenges to work on. Their book Do Hard Things, which grew out of a blog post on the subject, will be published in April.

Hucksarmy.com uses Meetup to organize group meetings, but that's where the resemblance to 2004's coffee-and-croissants netroots ends. The Harris brothers and their campaign managers are building a national team with specific responsibilities. For example, there's a point person for almost all 50 states, and special "liaisons" on each of the popular social-networking sites. The twins and their 28-year-old volunteer campaign manager, Jimmy Morris, who lives in the small town of Joplin, Missouri, meet nightly via conference call to strategize and to share ideas that have bubbled up through regional Meetup groups during the day.

The site is also a nerve center through which resources and ideas can flow almost instantaneously. A last-minute Monday rally for Mike Huckabee in Warren, Michigan, for example, was scheduled on Sunday night. Jeffrey Quesnelle, who heads the Michigan battalion of Hucks Army, sent an e-mail out to 200 members, and some 500 people showed up to meet the candidate, he says.

Quesnelle, a Catholic 20-year-old software engineer in Sterling Heights, Michigan, says that the group coordinates with the Huckabee campaign to target messages to specific voters, like white, under-30 evangelical Christian women.

"If we had every evangelical vote, statistically speaking, we'd win," Quesnelle says.

For Tuesday's Michigan primary, Hucksarmy.com helped provide Huckabee supporters with campaign materials. Quesnelle says he wrangled 500 promotional Mike Huckabee buttons from a button maker in New Hampshire, 400 rally signs from a supporter in Virginia and 600 bumper stickers "from a lady in Little Rock, Arkansas."

For their part, the Harris twins plan on launching a revamped version of their site on Friday – a day before the South Carolina primary. New features will include a live 24-hour online support person, who will answer visitors' questions about Huckabee, and rapidly updated online video feeds of Huckabee's television appearances.

"We're going to have a team that TiVos his appearances and have the fastest response of anyone online," Alex says.

The Harris twins' project is an online manifestation of what historically has been a very tight-knit community of social conservatives, who traditionally kept a low, but powerful, profile in national politics, says David All, a political technology and communications consultant and founder of the online Republican PAC Slatecard.

"They've been social networking without the proper tools for years," All says. "And now they're using some of that well-organized online elbow grease to help forward their cause."

For their part, the Harris brothers credit a higher power for their success.

"If we didn't think there was a higher standard, we wouldn't be interested in writing," Alex says. "Ultimately, it's in vain if God's not involved in it – the reason we're doing it is because we see God behind it."