John Hickenlooper, the former governor of Colorado, is running for president in 2020.

In a Monday morning tweet, the 66-year-old former geologist and restaurant owner shared a video announcing he is seeking the Democratic nomination.

"It's official: I'm asking you to interview me for President," he tweeted. "Our country is in crisis, and we need someone who knows how to bring people together and get things done. This is my record, but I've never done it alone."

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According to The Associated Press, Hickenlooper, who was Denver's mayor before he served as Colorado governor from 2011-2019, previously has supported gun control legislation and is against the death penalty. He also supported same-sex civil unions two years before the landmark 2015 Supreme Court ruling that legalized gay marriage, the AP reported.

Unlike some of his 2020 competitors, Hickenlooper, a moderate, "has hedged on supporting Democratic rallying cries like Medicare for All and the Green New Deal," the AP reported.

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– The Associated Press contributed to this report.