ATLANTA - Republican Herschel Walker’s $6.2 million in fundraising looked impressive when unveiled Wednesday, until Democrat Raphael Warnock rolled out his $17.2 million total a half-hour later. The dueling Senate campaign numbers underlined two truths. Georgia is again going to be one of the most expensive races to run for office in 2022, and Democrats are building a strong fundraising advantage. Like Warnock, Democrat Stacey Abrams heavily outraised incumbent Republican Brian Kemp in the race for governor, collecting almost $50 million compared to the $31 million Kemp has brought in over a longer period. Abrams and Warnock plan to run...