Oct 20 (Reuters) - David Eby, British Columbia's attorney general and housing minister, will become the Canadian province's premier, the ruling New Democratic Party said on Thursday, after his rival in the party's leadership race was disqualified for violating electoral rules. Register now for FREE unlimited access to Reuters.com RegisterEby will be officially declared leader on Friday morning, Cull said in a statement. "I'm proud David Eby will be the next premier of British Columbia." Horgan became premier in 2017 as head of a minority government before leading the NDP to a majority in 2020. Register now for FREE unlimited access to Reuters.com RegisterReporting by Nia Williams; Editing by Will DunhamOur Standards: The Thomson Reuters Trust Principles.

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