Loeffler will take office in January after being appointed by Gov. Brian Kemp to replace retiring U.S. Sen. Johnny Isakson. But others, including Trump, had lobbied for Collins to get the job.
When it became clear that Loeffler was the pick, he floated the idea of running against her in November.
However, Collins said his priority was fighting against impeachment and he would decide later about running for Senate. He told the AJC Friday that he has not set a timeline to make that decision.