Carrie Bickmore announces on air she is leaving The Project after 13 years

Founding co-host outlasted Charlie Pickering and Dave Hughes to be longest-serving panellist on nightly current affairs show

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Carrie Bickmore, a founding co-host of The Project, has announced she will leave the Channel Ten show at the end of November after 13 years.

It's been the hardest decision of my professional life to make this call, but it's time for a new challenge, time for the next chapter," a teary Bickmore, 41, said on Tuesday night's show.

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