As U.S. Sen. Johnny Isakson prepares to retire at the end of the year due to health concerns, he leaves behind both a legacy of 40 years in political office and a Senate seat that will be much sought-after by both Democrats and Republicans in 2020.
What Johnny Isakson's retirement could mean for Georgia's political landscape
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![Johnny Isakson 2018](https://gainesvilletimes.cdn-anvilcms.net/media/images/2019/08/28/images/Johnny_Isakson.max-752x423.jpg)