Iowa Congressman Greg Ganske is flying around the state today gathering endorsements from fellow republicans in his bid to unseat Democrat Senator Tom Harkin. The most important endorsement comes from Iowa’s top elected republican, Senator Charles Grassley. Grassley says Ganske is a proven leader who challenges the “status quo.”Grassley says it’s important to elect Ganske to bring control of the U-S Senate back to Republicans. He says that will benefit Iowans by returning himself back to his position as chair of the powerful Senate Finance Committee. Grassley says the committee affects all quality of life issues.Grassley says many political pundits call this race key to the control of the Senate, and that’s whey he’s committing to Ganske now. He says he felt he couldn’t wait until after the primary to get involved.Ganske and Grassley spoke at a stop in Des Moines. They earlier visited Waterloo, Dubuque, Davenport and Cedar Rapids. They will also visit Sioux City and Mason City today.