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Daniel Donner

@donnermaps.bsky.social

818 Following4.5k Followers

Contributor @the-downballot.com. Focusing on data, maps, and demographics. Find our data (and the CD hexmap template!) at https://the-db.co/data

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@johngramlich.bsky.socialOct 9, 2026, 1:33 PMReposted by @donnermaps.bsky.social

"67% of Trump’s 2024 voters now approve of his performance, down from 75% in July, 83% at the beginning of this year and 95% early in his second term." www.pewresearch.org/politics/202...

Line chart showing declines in President Donald Trump's job approval rating among various groups of Americans who voted for him in 2024. The chart is based on Pew Research Center surveys.
@carlquintanilla.bsky.socialOct 8, 2026, 11:12 PMReposted by @donnermaps.bsky.social

BLAS: “.. Once again, I had to update the y-axis as the cost of oil freight (Persian Gulf to the Far East) climbs further. Now at >$1.4 million per day.”

@bloomberg.com @javierblas.bsky.social ⛽️

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@ence.bsky.socialOct 7, 2026, 3:08 PMReposted by @donnermaps.bsky.social

unreal piece by @federicacocco.bsky.social @teoarmus.bsky.social. look at those job numbers falling off a cliff!

www.washingtonpost.com/politics/202...

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@carlquintanilla.bsky.socialOct 6, 2026, 4:36 PMReposted by @donnermaps.bsky.social

The NY Fed examines how tariffs affected inflation and finds that, without them, goods prices would have declined as of last February.

libertystreeteconomics.newyorkfed.org/2026/10/how-...

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@andrewdeck.bsky.socialOct 5, 2026, 8:47 PMReposted by @donnermaps.bsky.social

ChatGPT is adding the signatures of real New Yorker cartoonists to its AI-generated images. So far, I've found the signatures of more than 15 contributors.

"It’s slop, and unlike the other slop that I’ve encountered, this is slop that’s pretending to be me." www.niemanlab.org/2026/10/chat...

Left: A cartoon generated by ChatGPT and signed with Emily Flake’s signature that was posted to a Reddit forum in June. Right: A real Emily Flake cartoon published in The New Yorker on August 20, 2026 and licensed via The Cartoon Bank.
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@donnermaps.bsky.socialOct 3, 2026, 5:57 PM

You mean within 7 of 2018? That's the sort of normal variation you would expect from polls *if* the actual value were the same as 2018. Of course, we don't yet know the actual value this year.

@donnermaps.bsky.socialOct 3, 2026, 5:42 PM

A comparison of the NYT/Siena generic ballot numbers for each polled state with recent House popular vote margins within that state. The most recent poll for all states is within 7 points of the 2018 margin.

www.nytimes.com/spotlight/ti...

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@donnermaps.bsky.socialOct 2, 2026, 9:05 PM

Democrats don't want to stick around either, but didn't reach the record of 1992. 9 of these seats are open because of redistricting. 7 because of a primary loss.

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@donnermaps.bsky.socialOct 2, 2026, 9:03 PM

There's a record 44 Republican-held open House seats this cycle.

Half are because the incumbent is running for a different office or seat.

The previous high point was 41 in 2018.

docs.google.com/spreadsheets...

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@stephenwolf.bsky.socialOct 2, 2026, 4:35 PMReposted by @donnermaps.bsky.social

NEW: The 2026 elections in most states will decide which party runs elections heading into 2028 (see map).

We detail how Democrats could hold or gain this power in 14 potentially competitive states—and form a bulwark against MAGA subverting the 2028 elections
www.the-downballot.com/p/voters-can...

Map of the United States titled "2026 Elections That Will Decide Which Party Runs Elections," with the subtitle "Includes secretaries of state and other elected offices where relevant." Source: The Downballot. States are colored by incumbent party.

Democratic (blue), 14 states: Arizona, California, Colorado, Connecticut, Maine, Maryland, Massachusetts, Michigan, Minnesota, Nevada, New Mexico, Pennsylvania, Rhode Island, and Vermont.

Republican (red), 18 states: Alabama, Alaska, Arkansas, Florida, Georgia, Idaho, Indiana, Iowa, Kansas, Nebraska, New Hampshire, North Dakota, Ohio, Oklahoma, South Carolina, South Dakota, Texas, and Wyoming.

Bipartisan (yellow), 4 states: Hawaii, Illinois, New York, and Wisconsin.
Not up in 2026 (gray), 14 states: Delaware, Kentucky, Louisiana, Mississippi, Missouri, Montana, New Jersey, North Carolina, Oregon, Tennessee, Utah, Virginia, Washington, and West Virginia.

Footnotes: Illinois and Wisconsin have Democratic secretaries of state who do not run elections. Pennsylvania's Democratic governor appointed a Republican who typically aligns with Democrats.
@rsimmon.bsky.socialOct 2, 2026, 4:32 PMReposted by @donnermaps.bsky.social

With both Lake Powell and Lake Mead at record-lows, here’s a look at how their water levels have varied since Powell was filled in 1980. Neither has recovered from a severe drought in the early 2020s, while Colorado River flows continue to drop.

#dataviz #climate #globalwarming

Two graphs of water stored in Lake Powell (left) and lake Mead (right). The data are measured over the water year, which runs from October 1st to October 1st. Years when the lake level increased are marked in blue, years when they decreased are marked in red. Levels in Lake Powell maxed out at about 24-million-acre–feet  in the early 1980s, and are currently just over 5-million-acre-feet. Lake Mead was just over 25-million acre-feet in the early 1980s and late 1990s, but is now just under 7-million acre-feet.
@justinwolfers.bsky.socialOct 2, 2026, 12:39 PMReposted by @donnermaps.bsky.social

An all around weak -- but not tragic -- payrolls report for September. +29k jobs created, about 60k below expectations. Revisions made both July and August look weaker, too. Over the past 3 months, we've an average of a mere +17k per month.

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@kjhealy.coOct 2, 2026, 9:33 AMReposted by @donnermaps.bsky.social

I’ve written this up here. In addition to there not being a Covid-scale drop in tourism recently, you might also be wondering why visits from Mexico seem to double around 2004-05. The answer is not a sudden shift in Mexican preferences but rather our old friend, There Was A Change In The Measure.

@donnermaps.bsky.socialOct 1, 2026, 2:41 PM

The election is coming... time to get maps ready! We have both normal maps and our hexmap cartogram available for you as image files, shapefiles, and svg files.

The cartogram can also be found on Datawrapper under USA>>Congressional Districts Elections 2026 (hexmap)

docs.google.com/spreadsheets...

Cartogram of 2026 US Congressional districts2026 congressional district map, normal style
@titonka.bsky.socialSep 28, 2026, 2:28 PMReposted by @donnermaps.bsky.social

The masculinity politics beat continues to be very necessary. goodauthority.substack.com/p/republican...

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@aaronjbecker.bsky.socialSep 27, 2026, 1:01 PMReposted by @donnermaps.bsky.social

Lake Erie turned toward autumn in a single week. Every hour of its surface currents, 16 to 23 September 2026, colored by water temperature: the surface lost about 6°F in seven days.

Data: NOAA Great Lakes Operational Forecast System (model)

#LakeErie #GreatLakes #dataviz

@donnermaps.bsky.socialSep 25, 2026, 2:30 PM

1938 is the end of a dramatic realignment period. The years 1966, 1982, and 2006 were previously discussed in this thread:

@donnermaps.bsky.socialSep 25, 2026, 2:28 PM

These mismatches then show up as outlying data points on the regression of *change* in House popular vote versus *change* in national primary margin. But all the other years fall nicely along one tight line.

Regression of change in house popular vote versus change in national primary margin from 1939-2022.
@donnermaps.bsky.socialSep 25, 2026, 2:25 PM

But because four of the epochs have very similar slopes, we can transform the chart by looking at the *change* in both variables. And when we do that, the epoch divisions transform into mismatches between the two time series.

Graph showing the *change* in margin for both House popular vote and national primary between 1918 and 2022. From 1942 onwards, they closely follow each other, except at epoch changes (1938, 1966, 1982, 2006) and one more potential outlier - 1970.
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