Long-time Hood River County District Attorney John Sewell has announced he will not seek re-election to an eighth term.  Sewell has been in the position since winning election in 1992, unseating then-D.A. Sally Tebbet.  Sewell is retiring from a 40-year career as a prosecutor at the end of his current term, which expires at the conclusion of the year.  Prior to winning the D.A. position, he spent 12 years as a deputy district attorney, first in Coos and Lincoln counties before coming to Hood River County in 1984.  In his statement, Sewell says he will continue to work for the citizens of the County through the end of his term in office, and will do all he can to ensure a smooth transition to his successor.  Two people have filed to seek the position, with one week remaining before the filing deadline.  They include Marion County Deputy District Attorney and Hood River resident Sean Kallery and Hood River County Deputy District Attorney Carrie Rasmussen.  In his statement, Sewell says he supports Kallery to succeed him.