Nope. That would be the Secretary of State. Hillary Clinton.
I believe it is the Speaker of the House.
Sorry- You are wrong.
The person in line for the Oval Office after Obama & Biden is the current Speaker of the House, in this case, Boehner. That is because the House of Representatives most closely reprsents the voting will of the people, I was taught.
The Sec of State is not an elected position—it is an APPOINTED one.
Remember how many times we here on FR got the shakes over the possibility that Nancy Pelosi could be the President if anything happened to Geo Bush?
Sec of State is probably somewhere down the line of succession, but not 3rd.