DENVER — Less than a week after the release of a voter survey showing her out-polling all but one of the Democrats running in Colorado's 2020 U.S. Senate primary, Secretary of State Jena Griswold has formed an exploratory committee to consider joining the field of candidates hoping to unseat Republican Cory Gardner.

According to the Senate primary poll, which was commissioned by Griswold supporters and conducted by Democratic firms Keating Research and Onsight Public Affairs, Griswold finished second, behind former House Speaker Andrew Romanoff and ahead of former state Sen. Mike Johnston, two of the 10 declared candidates for Gardner's seat.

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"The fact that an undeclared entrant could garner second reaffirms the fact that this race is wide open," said pollster Chris Keating.

A full 42% of the likely Democratic primary voters surveyed said they were undecided, followed by 23% who said they would vote for Romanoff, 15% who picked Griswold and 12% who went with Johnston

The other three candidates included in the survey — former House Democratic leader Alice Madden, former U.S. attorney for Colorado John Walsh and former ambassador Dan Baer — all polled at 2%, under the survey's 4.4% margin of error. Another 2% said they preferred another candidate.

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