Sarah Harris to join The Project after Peter Helliar, Lisa Wilkinson and Carrie Bickmore quit

Studio 10 presenter will co-host Ten's flagship news program with Waleed Aly in a move the executive producer says will re-energise' the show

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Ten's Sarah Harris is joining Waleed Aly as a co-host on The Project next year following the recent exodus of three of the program's presenters.

While the departures have been framed as a personal choice, sources say flagging ratings and revenue at the flagship news program may be the reason behind the exit of three highly paid presenters within weeks.