Complex sentence: On 24 November 2011 she was nominated by the Opposition for the position of House Speaker, which she declined however she accepted the Government's nomination for the position of Deputy Speaker on the same day and was elected to the position following a ballot.
Split into simpler sentences: On 24 November 2011, she was nominated by the Opposition for the position of Speaker of the House, which she declined. However, she accepted the Government's nomination for the position of Deputy Speaker on the same day, and was elected to that position following a ballot.