The Denver Post editorial board berated Sen. Cory Gardner Cory Scott GardnerOvernight Health Care: US coronavirus deaths hit 200,000 | Ginsburg's death puts future of ObamaCare at risk | Federal panel delays vote on initial COVID-19 vaccine distribution The Hill's Campaign Report: GOP set to ask SCOTUS to limit mail-in voting Senate GOP sees early Supreme Court vote as political booster shot MORE (R-Colo.) Thursday, saying its endorsement of him was a “mistake.”

The op-ed was in response to Gardner’s vote against a Senate resolution blocking President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE’s national emergency declaration to allocate billions in federal funds to pay for a wall on the U.S.-Mexico border.

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“Gardner has been too busy walking a political tight rope to be a leader. He has become precisely what we said in our endorsement he would not be: ‘a political time-server interested only in professional security,’” the editorial board wrote. “Trump’s declaration is an abuse of his power, a direct overturning of Congress’ deliberate decision to pass a federal budget without funding for a wall.”

“Put simply this is a constitutional crisis and one of Colorado’s two senators has failed the test,” the paper added. “We no longer know what principles guide the senator and regret giving him our support in a close race against Mark Udall Mark Emery UdallThe 10 Senate seats most likely to flip Democratic presidential race comes into sharp focus Democrats will win back the Senate majority in 2020, all thanks to President Trump MORE.”

Gardner is one of the Democrats' top targets heading into the 2020 election cycle, as they hope to capitalize on Democratic nominee Hillary Clinton Hillary Diane Rodham ClintonButtigieg stands in as Pence for Harris's debate practice Senate GOP sees early Supreme Court vote as political booster shot Poll: 51 percent of voters want to abolish the electoral college MORE’s victory in The Centennial State in 2016. Though the Colorado Republican often touts his bipartisanship, Gardner votes with Trump over 90 percent of the time, according to FiveThirtyEight.

The Denver Post said they are not fully giving up hope on Gardner, saying he could still try to put country over party.

“Gardner could still prove to be a great senator for Colorado, a man who puts his state and his principles above party and politics. It’s a rare person these days who can take that road. In our endorsement this November of former U.S. Rep. Mike Coffman Michael (Mike) Howard CoffmanColorado mayor says he called protesters 'domestic terrorists' out of 'frustration' Colorado governor directs officials to reexamine death of Elijah McClain in police custody Petition demanding justice for Elijah McClain surpasses 2 million signatures MORE, a Republican from Aurora who was soundly defeated by Rep. Jason CrowJason CrowClark rolls out endorsements in assistant Speaker race Trump-Afghan deal passes key deadline, but peace elusive Cook shifts 20 House districts toward Democrats MORE, we stuck by someone who had shown a willingness to oppose that which he found morally reprehensible in his own party,” the editorial board wrote.