ABC anchor Diane Sawyer's bizarre election night behaviour

Diane Sawyer's Election Night performance left some US viewers asking if she had begun celebrating a bit early.

Co-anchoring ABC News' coverage, the veteran journalist struck a very different manner from her practised, straight style of news delivery.

Sawyer spoke more slowly than usual and slurred at times while seeming to prop herself on outstretched arms at the anchor desk she shared with George Stephanopoulos. Was she drunk?

"OK," she said at one point around 10 pm. "I wanna - can we have our music, because this is another big one here? Minnesota, we're ready to project Minnesota, rrright now. Well, tonight we know that President Barack has won Minnesota," she rambled on, stumbling over the president's name.

Tweeters were quick on her case, while a new Twitter handle, Drunk Diane Sawyer, collected hundreds of followers.