James Gibson, a soft-spoken software developer from Edina, walked in off the street to tell the leaders of the Independence Party he wanted to be their candidate for U.S. Senate. Party members weren't sure how to react to Gibson's request. Now, more than a year later, Governor Ventura's party's hopes of keeping major-party status depend on Gibson's candidacy. And Gibson has crafted a full-fledged campaign on a shoestring budget to take on two opponents with much more money: Republican incumbent Rod Grams and DFL department store heir Mark Dayton. Minnesota Public Radio's Amy Radil has this profile of James Gibson.