With Gov. Nathan Deal, a Republican, unable to run because of term limits, a large field of candidates is running to replace him. Lt. Gov. Casey Cagle will advance with Georgia’s secretary of state, Brian Kemp, to a July 24 Republican primary runoff.

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On the Democratic side, Stacey Abrams, a former minority leader of the Georgia House, beat State Representative Stacey Evans, who tried to appeal to white moderates. By contrast, Ms. Abrams — who would be the first black woman to be governor of any state — is focusing on mobilizing core supporters like young people, women, African-Americans and Hispanics to boost her chances in November.

In the House arena, keep an eye on the Sixth and Seventh Districts, two traditional Republican strongholds in the northern suburbs of Atlanta. In both districts, the Republican incumbents could face stronger Democratic challenges in November than they ever would have in a normal political environment.

The Sixth District has not been represented by a Democrat since 1979, but in a special election last year, Karen Handel, a Republican, had to fight hard to beat her Democratic challenger, Jon Ossoff. Now, with Ms. Handel up for re-election, several Democrats are trying to do what Mr. Ossoff could not quite manage.

In the Seventh District, the Democratic primary will probably boil down to three top contenders: Carolyn Bourdeaux, David Kim and Ethan Pham. The incumbent, Rob Woodall, is facing his own primary challenge from Shane Hazel, a Marine veteran and staunch conservative.