Republican former SEC prosecutor George Demos is forming another run for the Suffolk County House seat held by Democratic Rep. Tim Bishop, his campaign spokesman announced today.

Demos has created the “Friends of George Demos” committee in the lead up to a formal announcement and plans to make a public filing on Oct. 15.

Spokesman Rob Cole says the candidate has invested “a significant amount of resources” into the race to make himself competitive in the NY-1.

Demos first ran for the seat in 2010 in a primary field that included Randy Altschuler and, controversially, Christopher Cox, the son of state Republican Chairman Ed Cox.

Demos would finish second in the primary.

In 2012, he considered making another run for the Bishop seat, only to drop out in May as he was preparing for his marriage.

Republicans have made serious runs at Bishop over the last several election cycles and will likely become only more galvanized by his ongoing ethics investigation.

Update: A Republican source familiar with the NY-1 scene was deeply skeptical of Demos starting up another campaign in the distrcit.

“No amount of resources will make George Demos competitive in the First Congressional District,” the source said in an email. “After four years of constant campaigning, George Demos is about as welcome in CD 1 as head lice. He has very few friends and virtually no support base. A more serious Republican candidate will emerge in the near future. If George Demos wants a primary, he’ll be embarrassed for a third time.”

Clearly, Demos has his work cut out for him.