Blue, a North Carolina native with degrees from N.C. Central and and Duke universities, served as . speaker of the N.C. House in the early 1990s, only to be ousted as majority leader after the Republican sweep of the N.C. General Assembly in 1994.
Blue is the fourth candidate to announce his bid for the U.S. Senate seat, following announcements by Democrat Elaine Marshall and Republicans Ada Fisher and Richard Vinroot.
Blue has gone against the wishes of the Democratic Party leadership on several occasions, including leading a group of eight dissident Democrats in splitting from the party line on the issue of a proposed one-cent sales tax increase. The "Group of Eight" has delayed attempts of House Democrats to pass a tax package.
In 1998 Blue also attempted to build a coalition of Republicans and black Democrats to capture the post of House Speaker.
Democratic Party members are hesitant to say if Blue's recent actions will damage his Senate campaign.
"I think that will depend on how the current session ends," said Barbara Allen, head of the N.C. Democratic Party.
"He has been in the legislature for 11 terms," she said. "He's been a very effective legislator during his time."
Ferrel Guillory, director of UNC-Chapel Hill's Program on Southern Politics, Media and Public Life, said Blue is a strong candidate with a mix of potential strengths and weaknesses.
Guillory added that Blue's recent actions in the legislature will not adversely affect public perception of him.