ATLANTA — The two Republicans vying for Georgia’s open Senate seat have spent a combined $11 million so far on the race, with just over a week to go before the July 22 runoff. Rep. Jack Kingston has dominated in fundraising throughout the campaign, although former Dollar General CEO David Perdue has been closing the gap, helped in large part by his personal funds. On Thursday, Kingston reported receiving $1.6 million in contributions over the past two months, compared to $974,000 in contributions for Perdue.