Democrats in a dozen-and-a-half swing House districts are panicking over the hundreds of millions of dollars of outside money pouring into races featuring vulnerable GOP incumbents. And the national Democratic Party can send very little. National Democratic organizations aren’t airing TV ads in six of the 14 Republican-held districts that went for Biden in 2020. Many of those districts, like the seat held by retiring congresswoman Democratic Rep. Ann Kirkpatrick, will be sacrificed because the national party just doesn’t have the cash. “I know with every bone in my body that [Kristen] Engel will win this district if we can...