The Voting Page shows we're having a Swing-A-Thon again in the semi final. There should be five couples left at this point of the series, so two will be eliminated and three will go on to compete in the final.
In the unlikely event that there is a tie in the judges' scores and the public phone vote for the two or more couples at the bottom of the leaderboard the judges will confer and decide which couple will leave the show. As there are four judges, if there is a tie in the judges' vote head judge Len Goodman will have the casting vote.”
It used to be the couple with the most votes stayed in the competition.