Complex sentence: Ross was not re-endorsed by his own party to stand in the Northern Territory general election, 2012 but this has been gossip within the CLP since May 2011 but still came as a surprise to him.
Split into simpler sentences: Ross was not re-endorsed by his own party to stand in the Northern Territory general election, 2012. This has been gossip within the CLP since May 2011 but still came as a surprise to him.