Originally Posted by aggs:
“No, it was that way for the first 4 series (I think there was a kind of trial run towards the end of series 4?). Dance off arrived in series 5, stayed for the mess of series 6, limped on into series 7, was rested for series 8 and 9 and returned in series 10.
If you look at the leaving info, it really doesn't make that much difference - in fact, the public vote seems to,tally more with the judges in non dance off series. In fact, it could make the lower middle order more vulnerable as people vote to keep people out of the bottom 2 rather than just dead last.”
The dance-off in Series 4 was decided the other way around from today. As the bottom 2, Emma and Louisa both danced again, then lines were re-opened for a period, and whoever got the fewest viewer votes of the two of them was eliminated - in this case Louisa. The judges had no say (although they would have no doubt saved Bunto).
To clarify on the earlier point, in the early series (and 8 and 9) the eliminations were decided based on a combination of judges scores and public vote. Other than the above mentioned example and in finals, it was never public vote alone.