Republican Charles Baker is planning to formally kick-off his campaign for governor.

    Baker is set to make the announcement in a video released on the Internet and through social media Wednesday morning.

    Two individuals with knowledge of Baker's plans told The Associated Press the video will mark the start of Baker's second bid for the corner office. The individuals requested anonymity because the formal announcement hadn't been made.

    Baker did not immediately return a phone call Tuesday.

    Baker is the former head of Harvard Pilgrim Health Care and served eight years in state government as human service secretary and budget chief for former Republican Govs. Paul Cellucci and William Weld.

    He ran for governor in 2010 and lost to incumbent Democratic Gov. Deval Patrick.

    Baker is the first Republican to jump into the 2014 race. Several Democrats have already declared.  (Associated Press)