Charles Koch. Photo: Patrick T. Fallon for The Washington Post via Getty Images

The network funded in part by billionaire and Republican megadonor Charles Koch is shifting gears in its efforts to combat President Donald Trump's trade war with China, CNBC reports, after sources told the outlet that its TV ad campaign has fallen flat.

Why it matters: Leaders of the network told CNBC that the argument they're selling to voters — that tariffs are costing American consumers — isn't resonating. "It doesn’t penetrate with the people that are willing to go along with the argument that you have to punish China," a senior Koch official told CNBC.

What's next: Koch network officials said they will try a new message, but they weren't clear on what exactly that will entail. They will also try a more grassroots approach that will include educating 100,000 activists in 35 states about the negative effects of combating China through tariffs.

By the numbers: According to a recent Harvard CAPS/Harris Poll survey, 63% of all registered voters believe tariffs will ultimately hurt the United States more than China. but 67% said it is necessary to confront China over its trade policies.

Go deeper: Trump's trade war is being felt throughout the economy

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Illustration: Sarah Grillo/Axios

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Why it matters: The company, which still distributes mostly music, will begin to encounter more of these types of problems as it expands its podcast business.

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Data: The COVID Tracking Project, state health departments; Map: Andrew Witherspoon, Sara Wise/Axios

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Joe Biden attends a virtual town hall event with Oprah Winfrey at The Queen theater in Delaware. Photo: Drew Angerer/Getty Images

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Why it matters: Biden's team is betting that COVID-19 is on the ballot, and amplifying the stories of those affected by the pandemic with an emphasis on persuading voters in key battlegrounds to support the former VP.