Ferguson and her mentor Cheryl Cole appeared at the Echo Arena for a short show, which included performances of 'Feeling Good', 'Amazing Grace' and 'Show Me Love'.
Cole and the Lord Mayor of Liverpool appeared on stage to praise the 24-year-old singer and urged her fans to keep voting for her this weekend.
Ferguson also returned to her former school Gateacre Comprehensive, where she sang for Year Seven pupils. Headteacher Gerard Lonergan told the Liverpool Echo: "Rebecca Ferguson was absolutely lovely. She made a real connection with the children."
One Direction visited Louis Tomlinson's Hall Cross School in Doncaster yesterday, while Matt Cardle is scheduled to perform in his hometown of Colchester, Essex tomorrow.