A new poll shows support for impeachment way up and the share who strongly approve of Trump also up, with overall approval roughly unchanged.

Identify the poll Silver referenced (released around 29–30 Sept 2019, e.g., a CBS/YouGov, CNN or similar poll) and compare it with that pollster's previous wave. True: support for impeachment rose substantially (several points or more), the share strongly approving of Trump rose, and overall approval changed by no more than about 2 points. Mostly true: all three hold, with one change slightly smaller or larger than described (e.g., overall approval moved 2–3 points). Mixed: two of the three parts hold. Mostly false: only one part holds (e.g., impeachment support up, but strong approval flat or down). False: impeachment support did not rise, or the poll shows none of the described changes.

Set before the research began.

1. E1 Polls show support for impeachment rising amid Trump ... - Axios Axios · 26 September 2019

   “The Ukraine story, and subsequent calls for his impeachment, have not changed Trump’s already-low approval rating. Forty-one percent of voters approve of Trump and 56 percent disapprove, roughly unchanged since the Sept. 20-22 poll,”

2. E2 Polls show support for impeachment rising amid Trump ... - Axios Axios · 26 September 2019

   “43% support impeachment proceedings against Trump, up 7 points from a poll on Sept. 20–22.”

3. E3 Impeachment, Sep 2019 Marist College Institute for Public Opinion (NPR/PBS NewsHour/Marist Poll) · 27 September 2019

   “The proportion of Americans who strongly approve of the president’s job performance is 31%. 39% of those who disapprove say they strongly do so. When reported earlier this month, 28% said they strongly approved of the president’s job performance, and 45% reported they strongly disapproved.”

4. E4 Impeachment, Sep 2019 Marist College Institute for Public Opinion (NPR/PBS NewsHour/Marist Poll) · 27 September 2019

   “President Trump’s job approval rating among Americans is 44%, notched up from 41% earlier this month.”

5. E5 PRESS RELEASE: Reuters/Ipsos Poll: Trump/Biden/Ukraine Survey Wave 2 Ipsos (for Reuters) · 30 September 2019

   “Currently, 45% of Americans believe President Trump should be impeached, up from 37% last week.”

6. E6 PRESS RELEASE: Reuters/Ipsos Poll: Trump/Biden/Ukraine Survey Wave 2 Ipsos (for Reuters) · 30 September 2019

   “At the same time, President Trump’s approval rating has decreased, from 43% last week to 39% now.”

7. E7 Trump's Approval Rating Is Lower Than Support for His Impeachment: Poll Newsweek · 1 October 2019

   “Five days earlier, another Quinnipiac poll showed support for Trump's impeachment at 37 percent and opposition at 57 percent, suggesting the Ukraine-Biden affair is shifting the dial among voters.”

8. E8 Trump's Approval Rating Is Lower Than Support for His Impeachment: Poll Newsweek · 1 October 2019

   “President Donald Trump's approval rating is six points lower than support for his impeachment, according to a new poll, following a sudden shift in opinion among voters about removing him from office.”

None of the evidence identifies which poll Silver meant, and no single poll in the evidence shows all three parts of the claim. A poll reported by Axios shows impeachment support up 7 points since a Sept. 20–22 poll, with approval roughly unchanged, but the quoted text gives no figures on strong approval (E1, E2). Marist shows strong approval up from 28% to 31% and overall approval up 3 points, but the quoted text gives no figures on impeachment support (E3, E4). Reuters/Ipsos shows impeachment support up 8 points but approval down 4, and the quoted text gives no strong-approval figures (E5, E6); the Quinnipiac coverage gives only an earlier 37% impeachment figure and a six-point gap between approval and impeachment support (E7, E8). Without the referenced poll and its previous wave, the claim cannot be checked against the criteria.