Former Colorado Gov. John Hickenlooper launches campaign for Senate - CNN
- Former Colorado Gov. John Hickenlooper launches campaign for Senate CNN
- Hickenlooper to run for Senate in Colorado POLITICO
- Hickenlooper to run for Senate in Colorado, looking to oust GOP Sen. Gardner: report Fox News
- Hickenlooper joins crowded Senate race in Colorado after dropping presidential bid Washington Post
- John Hickenlooper Will Run for Senate in Colorado, a Key Target for Democrats The New York Times
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