HONOLULU -- The announcement by Rep. Ed Case to for go re-election to the U.S. House for a chance at the Senate has sparked a flurry of political activity. A number of politicians are now throwing their names into the race for Congress.

State Sen. Ron Menor walked to the federal building with his wife, Patricia, to announce on Friday that he will run for Case's seat. Menor ran unsuccessfully against Patsy Mink for the same congressional seat 15 years ago.

"I think the primary aspect that separates me from the others is my extensive legislative experience combined with the fact that I have a proven record of accomplishment," Menor said.

Kauai Sen. Gary Hooser officially announced his campaign as well on Friday. He appeared with a new hairstyle and had shaved his mustache.

"I believe living in the second congressional district for the last 26 years gives me a certain understanding that the other candidates may lack," he said.

Sen. Colleen Hanabusa, who ran unsuccessfully in 2002 after Mink died, is making a second congressional bid.

"I believe I am the most viable candidate because the 2nd Congressional District has issues very similar to what I face in my 21st Senatorial District," she said.

Hanabusa, Hooser and Menor are half way through their Senate terms. So, even if they lose, they can return after to their Senate seats.

House Rep. Brian Schatz, 33, is the youngest candidate so far.

"I think I represent the best part of a new team," he said.

Former Lt. Gov. Mazie Hirono said she will run for the congressional seat for sure. She plans to make an official announcement at a later time.

Others considering a run for the office include Honolulu council members Nestor Garcia and Charles Djou and former Councilman Mike Gabbard, a Republican.