An old parlor game among radicals is speculating on divisions among the owning class—by industrial sector, geography, networks, or political leanings—and their possible consequences, if any. In that tradition, it’s worth a look at how the American business class is lining up behind the two presidential candidates: one an alleged billionaire, the other with a net worth estimated by Forbes at a mere $8 million. I’ll stick mainly with Kamala Harris.

A nice point of entry into this analysis is a recent article from CNBC, which recounts an open letter signed by “88 high-profile business figures” endorsing Harris for president. The letter assures us—and, perhaps more importantly, their fellow titans of commerce—that “the business community can be confident that it will have a President who wants American industries to thrive.” Most (though far from all) of the signers are recognizable to those of us who follow this sort of thing. It was, however, not what you’d call a broadly representative sample of the “business community.” Of the 88, 33 were from finance, 17 from tech, and nine from the media, which adds up to 59, or two-thirds. There was a scattering of retail execs, a couple of “entrepreneurs” (including the ubiquitous Mark Cuban, whose claims to fame have eluded me for years), a long-retired airline executive (American Airlines ex-CEO Robert Crandall, an icon of the tough 1980s style of cost-cutting, who famously got caught conspiring with a competitor to raise fares in 1982), and a smattering of retired manufacturing chiefs. There were a few active manufacturers, but in niche subsectors like food and cosmetics. There was no one from the fossil fuel business or construction; few from health care or transportation (aside from Crandall). Quite a few of the Harris backers are retired; the word “former” appears 46 times in the document.

Most of the signers aren’t at the summit of American wealth. For a look at the upper altitudes, we can turn to a survey by Bloomberg—the news service, not the plutocrat—which helpfully assembled an census of which candidates members of their billionaires list are supporting. In their words, “Among the ultra-rich, Trump comes out on top.” Trump has gotten $24 million from these mega-moneybags, almost twice as much as Harris’s $13 million (though some of that was donated to Biden before he withdrew). Adding up the wealth of the backers, Trump’s 2/1 advantage prevails: $438 billion for Team Trump, $222 billion for Harris supporters.

A big chunk of the Trump total is Elon Musk’s $237 billion net worth; take him out—which would be nice, but you can’t—and Trump lags Harris by $21 billion. The plutocrat who gives the news service its name, Michael Bloomberg, is deliberately excluded from the list. Adding his hoard, $105 billion according to Forbes, to the total brings Harris’s camp up to $327 billion. That still lags Trump, but not by all that much, especially when you consider how much of this wealth is ephemeral stock market money, liable to melt away if the market heads south. One culturally significant billionaire not on Bloomberg’s list—because she barely makes the ten-figure cut at $1.1 billion—is Taylor Swift, who in this taxonomy probably counts as media.

Clearly, Harris has no serious problems with the superrich, even if the putative billionaire Trump has an edge. But you can’t run a campaign on the affections, or even the contributions, of billionaires alone. You need some money from the merely affluent as well, like upper-middle-class professionals. To find who they’re giving to we need to look at the contributors to the campaign and associated PACs.

Harris’s main fundraising vehicle is Harris for President, née Biden for President. (She inherited Biden’s campaign money on his withdrawal.) As of July 31, it and its affiliates have raised $770 million, 59 percent of it from large contributions (defined as over $200). According to OpenSecrets’ compilation of data filed with the Federal Election Commission, contributions from those employed in finance and real estate accounted for 21 percent of the total; law firms and educators, each 6 percent; tech and media, each 5 percent. Among the also-rans: health professionals (3 percent) and the medical–industrial complex (2 percent), who may not have aligned interests.

The only labor group in the top 20 were the building trades unions (which as the late political economist Robert Fitch used to say, follow their employers’ lead on politics, meaning the real estate industry and construction firms). A separate sectoral accounting lists four unions as major contributors, but their combined total is less than the venture capital firm Sequoia Capital alone (and Sequoia is only the third-largest VC contributor on the list).

A similar list of top contributors for Trump—whose campaign has raised $574 million, 68 percent of it from large contributions—shows some sectoral overlaps but also some sharp differences. Industries common to both lists are finance (with Trump’s collections 55 percent larger than Harris’s), real estate (almost equal), health professionals (with Trump collecting less than half as much), law firms (only a fifth as much as Harris), and tech (with Trump getting only a seventh as much as Harris, and all of it from electronics, none from internet firms). Notably absent from the Trump list: education and media. MIA from the Harris list: dirty industries like oil and gas, waste management, and tobacco. Agribusiness, which thrives on low wages and the loose regulation of poisonous chemicals, is also in his top 20 but not on the VP’s. Trump gets the construction industry; Harris, construction unions.

A closer look at Harris’s monied constituency can be found with roster of contributors to her Future Forward PAC (also inherited from Biden), assembled again by OpenSecrets. There were 154 large contributors listed through the end of July, accounting for 75 percent of the PAC’s fundraising of $164 million.. Of those listed, 22 have donated $1 million or more. Stripping away transfers from elsewhere in the Harris operation, 28 percent of the total, you’re left with 18 in this elite category, which account for 36 percent of the total haul. Another 19 who gave between $500,000 and $999,999 accounted for 6 percent—meaning 42 percent of the PAC’s income came from contributions of half a million or more. This is not the Bernie Sanders contributor base.

Of those who can be easily identified, 27 percent made their money in finance, 6 percent from media, and 3 percent from tech. At the top of the list, Michael Bloomberg, who donated $19 million, is a hybrid of finance, media, and tech. Curiously, celebrity architect Frank Gehry was in for $1 million. There’s one old-style manufacturing firm on the list (SteelFab, a maker of structural steel) and one union, the American Federation of Teachers. Law firms, long a mainstay of Democratic fundraising, were surprisingly light on the list, accounting for just 0.3 percent the total.Putting it all together, it looks like finance is Harris’s main base of business support, followed by tech and media.