Washington, D.C. ? South Dakota Sen. Tim Johnson returned to the Senate on Wednesday physically weaker but saying he anticipates running for re-election next year.

Johnson, a Democrat, has been out since suffering a life-threatening brain hemorrhage nine months ago. Effects of the hemorrhage remain – he uses a scooter to get around and his words are slow and slurred.

But his mind appears sharp, and he gave every indication of wanting to stay.

“It feels good and I’m ready to go,” he said in an interview after returning to his office.

Later, he spoke on the Senate floor.

“It must already be clear to you that my speech is not 100 percent,” he said haltingly. “My doctors tell me that it will get there. But my thoughts are clear and my mind is sharp and I’m here to be a voice for South Dakota in the Senate.”