ATLANTA — Georgia Republican lawmakers took a key step Friday in a long and untested process that could trigger an extraordinary takeover of the elections system of one of the state’s biggest Democratic strongholds. State Rep. Jan Jones and four other House Republican legislators sent a letter Friday demanding a review of Fulton County’s election management, a critical step in Georgia’s new voting law that must take place before the State Election Board can overhaul a county’s election board. It’s a monthslong process full of legal questions and procedural challenges, but state Republicans hav...