By early 2011 Mr Harawira had left the Maori Party, formed the Mana Party and was narrowly leading Mr Davis in voter surveys before a mid-year byelection which Mr Harawira won with 5611 votes - 1117 ahead of Mr Davis, but well short of the large gap between the pair after the 2008 poll.
The biggest loser on the night was the Maori Party, which saw its candidate, Solomon Tipene, collecting only 1026 votes.
It looked like the 2011 general election could get Mr Davis off the Labour list and holding his seat in Parliament as an elected member, but he quit politics after finishing 832 behind Mr Harawira.
Mr Davis, 47, a former Kaitaia Intermediate School principal, has since been employed by the Ministry of Education in Kaitaia, where he is working with iwi on their education plans.
He declined to discuss his renewed candidacy before he takes leave from the ministry, probably around June 30, to concentrate on the election.
Labour's Te Tai Tokerau electorate chairman Haydn Edmonds said he and other party officials had sought out Mr Davis to stand again because of his capabilities and the contribution he had made as a list MP.
"Kelvin is a seasoned politician now," Mr Edmonds said.
"We are very excited he has put his name forward again because we think he will bring a clear direction for Northland's economic development and education.
"He has built significant relationships in the community, particularly in education where Northland Maori schools have benefited from his involvement in their spectrum.
"We think he is a very good candidate for Te Tai Tokerau."
