We spoke to Walker just moments after it was announced that Grimes won the Democratic nomination.
Walker said she will immediately start supporting Grimes.
She said it is an honor to have received the 60,000 votes that she did because just a few months ago, hardly anyone outside of Warren County even knew her name.
She became Secretary of State in January, after Governor Steve Beshear appointed her to finish out Trey Grayson's term.
Walker has a lot of work left to do before she leaves office in November.
"Do I wish I had won? Absolutely. But this has been a great experience. I look around this room and I am surrounded by people who know me, who love me, and so I'm not going out with any regrets," said Walker.
Walker says she wants to continue serving Kentucky in a political office, possibly state wide.
When asked if she may run for Bowling Green Mayor again, she said she was proud of her six years as Mayor, but will just have to see what the future holds.