Originally Published: 29 NOV 22 13:00 ET

Updated: 30 NOV 22 10:14 ET

By Andrew Kaczynski and Olivia Alafriz, CNN

(CNN) -- Georgia Republican Senate candidate Herschel Walker, facing renewed and growing questions about his residency in the final week of the runoff campaign, described himself during a campaign speech in January as living in Texas and said he decided to run for Georgia's Senate seat while at his Texas "home," according to a CNN KFile review of his campaign speeches.

Georgia Democrats have called for an investigation by state officials into Walker's residency after CNN's KFile reported last week that Walker was getting a tax break in Texas intended for a primary residence, possibly running afoul of Texas tax law and some rules for establishing Georgia residency for voting and running for office.

"I live in Texas," Walker said in January of this year, when speaking to University of Georgia College Republicans. Walker was criticizing Democrats for not visiting the border when he made the comments. "I went down to the border off and on sometimes," he said.

Earlier in the speech, Walker said he decided to run for Georgia's Senate seat while at his Texas home after seeing the country divided.

"Everyone asks me, why did I decide to run for a Senate seat? Because to be honest with you, this is never something I ever, ever, ever thought in my life I'd ever do," said Walker. "And that's the honest truth. As I was sitting in my home in Texas, I was sitting in my home in Texas, and I was seeing what was going on in this country. I was seeing what was going on in this country with how they were trying to divide people."

The Georgia Republican is heading into a runoff election against Democratic Sen. Raphael Warnock on December 6. Walker and his campaign have so far not commented to CNN or others on the reporting of the tax break or questions about his residency.

On Monday, The Atlanta-Journal Constitution reported that Georgia authorities have been urged in a complaint to investigate Walker's residency. Georgia Democrats in a statement called for an immediate investigation of Walker's residency, and Congresswoman Nikema Williams, the chairwoman of the Democratic Party of Georgia, also asked authorities to see if Walker lied about living in Georgia.

"The Georgia Bureau of Investigations and the Georgia Attorney General's office must immediately investigate whether Herschel Walker lied about being a Georgia resident," Williams said.

Made media appearances from his Texas home to campaign for Senate seat

A CNN KFile review of some of Walker's media appearances and events from 2021 and 2022 finds Walker appeared on Fox News and other conservative media from his Texas home at least four times after announcing his candidacy for Georgia's Senate seat.

The interviews at his Texas home took place twice in September 2021 and in February and March of 2022.

Before announcing, all of Walker's media appearances on Fox News and on other conservative media, around 20 in total, took place in Texas.