Scott Sonner / AP

Many Republicans wondered this weekend if it made sense for America First Policies, the outside group backing President Trump, to run attack ads against Sen. Dean Heller (R-Nev.) for wavering on healthcare, when his vote is desperately needed.

"Does Trump team think it's smart to attack the most endangered GOP senator, from a state Trump lost?" asked a longtime lion of the GOP. "This is the second dumbest thing Trump has done since firing Comey."

Well, Axios has learned that the group is giving Heller a chance to modify his blast at the bill, before unleashing an advertising attack in his home state.

  • The backstory: After Heller announced his surprise opposition to the Senate bill on Friday, the group said it planned a seven-figure buy in Nevada.
  • The drama: The attacks have not begun — and won't, if Heller retreats. The group could follow what it did with some wavering House members, and run ads of encouragement rather than opposition.
  • A Republican operative: "The content of the ad is really up to Senator Heller ... If [moderate] Congressman [Tom] MacArthur and [conservative] Congressman [Mark] Meadows can work together in the House to get to yes, I'd like to think Senator Heller could work with Leader McConnell to get to yes."
  • The arsenal: Phone banks that connect constituents with senators' offices are being run by America First Policies in the states of eight wavering senators: Ohio, Kentucky, Utah, Texas, Maine, Wisconsin, Louisiana and Alaska.
  • The longer game: Looking ahead to 2018, the group is running cable ads against Democrats in these eight states, starting this week: Michigan, Ohio, Montana, North Dakota, Virginia, Missouri, Indiana and West Virginia.

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Why it matters: U.S. mail and election infrastructure are facing a test like no other this November, with a record-breaking number of mail-in ballots expected as Americans attempt to vote in the midst of a pandemic.

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Why it matters: Testing shortages and backlogs underscore a need for improved mass testing for COVID-19. Diagnostic tests based on CRISPR — which Doudna and colleagues identified in 2012, ushering in the "CRISPR revolution" in genome editing — are being developed for dengue, Zika and other diseases, but a global pandemic is a proving ground for these tools that hold promise for speed and lower costs.

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Coronavirus dashboard

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  1. Global: Total confirmed cases as of 5 p.m. ET: 18,912,947 — Total deaths: 710,318— Total recoveries — 11,403,473Map.
  2. U.S.: Total confirmed cases as of 5 p.m. ET: 4,867,916 — Total deaths: 159,841 — Total recoveries: 1,577,851 — Total tests: 58,920,975Map.
  3. Politics: Pelosi rips GOP over stimulus negotiations: "Perhaps you mistook them for somebody who gives a damn" — Ohio Gov. Mike DeWine tests positive.
  4. Public health: Majority of Americans say states reopened too quicklyFauci says task force will examine aerosolized spread.
  5. Business: The health care sector imploded in Q2More farmers are declaring bankruptcyJuly's jobs report could be an inflection point for the recovery.
  6. Sports: Where college football's biggest conferences stand on playing.