Griswold is Colorado's first elected Democratic Secretary of State in 60 years.
Griswold, a Democrat, has said she will focus on expanding voting rights and access.
Colorado Public Radio will be following the election all day and into tonight. Follow coverage online, on the radio and on social media.
Where do the candidates stand on the issues? We've lined up a comparison to assist in your decision.
Candidates for state treasurer and secretary of state as well as Colorado’s expansive 3rd Congressional District also debated Saturday in Grand Junction.