Washington (CNN) -- Sen. Kay Bailey Hutchison, who had said she would resign her seat to run for governor of Texas, plans to announce Saturday she will remain in the Senate as she seeks the Republican Party's gubernatorial nomination, a Hutchison aide tells CNN.
"She will announce tomorrow at the Texas Federation of Republican Women's Convention in Galveston that she will not be resigning her seat before the primary," said the aide, who spoke on the condition of anonymity.
"She is running for governor because she feels it is important to fight on two fronts, for the race for governor and against the Democratic health care proposal and cap and trade."
In July, Hutchison told Dallas radio station WBAP that she planned to leave the Senate in the fall.
"Then the actual leaving of the Senate will be sometime -- October, November -- that, in that time frame," she said.
The aide said that Hutchison "plans to resign" her Senate seat "after the primary." The aide brushed off the question of whether she would quit if she ends up losing the primary to Gov. Rick Perry.
A Perry spokesman quickly responded to the latest news in what has been a contentious primary battle.
"We appreciate that Sen. Hutchison has taken the governor's advice and finally decided to make a decision to stay in Washington," Perry spokesman Mark Miner said in a statement. "Hopefully this will allow her to be a full-time senator for the people of Texas."