Larry Hogan, chairman of the conservative activist group Change Maryland, will officially announce on January 21 he is a Republican candidate for governor.

The former appointments secretary to Gov. Robert L. Ehrlich Jr. sent an e-mail to supporters Sunday saying he would make the announcement at Mike's Restaurant & Crab House in Riva.

Hogan said in November that he planned to seek the nomination.

He will join a field that includes Harford County Executive David R. Craig, Del. Ron George of Anne Arundel County and Charles County business executive Charles Lollar. The filing deadline is Feb. 25.

andrea.walker@baltsun.com

Twitter.com/ankwalker