Where the Ad Money Actually Goes

Every political ad dollar that leaves a campaign or outside group splinters into channels before it reaches a voter — and the split says more about modern politics than the ads themselves.

01The Pile Before the Split

Before a single spot airs, the money has already traveled. Donors give to campaigns, to political action committees (PACs), to Super PACs, and to 501(c)(4) organizations. From those committees, it flows to consultants and vendors — and eventually to the firms that actually place ads against audiences. By the time a dollar becomes a viewable impression, it may have crossed three or four organizational boundaries. But the question of where it lands is ultimately answered by a simple set of channel decisions: broadcast television, cable television, digital platforms, or the fast-growing hybrid category of connected TV (CTV).

Those decisions are not random. They reflect audience reach, cost efficiency, targeting capability, and the disclosure rules that govern each medium differently. Understanding how the pie is cut — and why — is one of the most revealing things a careful reader of political money can do.

A useful way to think about it: picture a composite illustrative ad budget of a million dollars deployed in a competitive market during a typical cycle. That budget won't stay whole. It will be divided, discounted, marked up, and routed through layers of intermediaries before it produces the impressions a campaign or outside group is actually buying. The channel breakdown is where that story starts.

02Broadcast: Dominant, but Eroding

For most of the television era, broadcast — the over-the-air network affiliates that carry local news alongside national programming — absorbed the commanding majority of political ad spending. The logic was irresistible: a single spot in a local news block reached a large, relatively undifferentiated audience in a geographically defined market, and federal law required stations to offer candidates their lowest unit rate during specified windows before an election. That statutory discount, which applies to candidate committees but not to outside groups like Super PACs, made broadcast the most cost-efficient channel for campaigns with legal access to it.

Today, broadcast still claims the largest single share of a typical political ad budget — somewhere in the range of half or more of total television spending in most competitive markets, though that share has been declining for years. The erosion is structural, not cyclical. Cord-cutting has reduced the broadcast audience even as the nominal reach of the medium remains broad. Older, more reliable voters are still well-represented among broadcast viewers, which is why campaigns haven't abandoned the channel. But the efficiency argument that once made broadcast almost mandatory is weakening as viewership fragments.

The mechanics of buying broadcast are also the most regulated and the most disclosed. Stations are required to maintain public political files — records of who bought time, at what rate, for which candidate or group. Those files, now available digitally through the FCC's online database, are among the richest sources of raw data on local ad spending available to researchers and watchdogs. A careful reader of those files can see not just that money was spent, but who spent it, what the spots cost, and when they aired.

03Cable: Targeted but Capped by Geography

Cable television occupies the middle ground in most political ad budgets — typically the second-largest chunk of television spending, though it trails broadcast by a meaningful margin. Its appeal is targeting: cable systems can sell advertising in discrete geographic zones, and specific cable networks attract audiences with relatively predictable demographic and ideological profiles. A buy on a news channel skews older and more politically engaged; a buy on a sports network skews male; a buy on a lifestyle network skews toward particular household compositions. Campaigns and outside groups use these profiles to concentrate spending on persuadable voter segments rather than broadcasting to everyone.

The tradeoff is reach. No single cable buy hits the same volume of viewers as a prime-time local news spot on a broadcast affiliate. Cable audiences are also increasingly fractured, as streaming alternatives pull viewers away from linear cable. Still, in a typical competitive cycle, a well-run campaign or Super PAC will allocate a meaningful share — often somewhere between fifteen and thirty percent of television spending, as a rough illustrative range — to cable placements, particularly in markets where the target audience skews toward heavy news consumption.

Cable political ad purchases are also disclosed in FCC public files, though the rules are somewhat more complex because cable systems operate under different regulatory frameworks than broadcast stations. Researchers tracking political money frequently have to stitch together broadcast and cable filings from different databases to reconstruct a complete picture of local television spending.

If broadcast is the incumbent and cable is the middle child, digital is the channel everyone is watching.

04Digital: Growing Every Cycle

If broadcast is the incumbent and cable is the middle child, digital is the channel everyone is watching. Across a typical cycle, the digital share of total political ad spending has grown in each successive election period, and the trend shows no sign of reversing. The channel encompasses a wide range of sub-categories: search advertising, social media video and display, programmatic display, streaming audio, podcast advertising, and online video placements across platforms that range from massive to niche.

The appeal of digital is targeting granularity. A campaign or outside group with a list of target voters can, in principle, serve ads specifically to those individuals across social media platforms and programmatic networks — a precision that broadcast and cable cannot match. Digital also offers real-time feedback on performance: click rates, video completion rates, and engagement metrics let buyers adjust placements continuously, which is why digital budgets tend to be managed more dynamically than television buys.

But digital comes with a disclosure gap that broadcast and cable do not. Federal law does not require digital platforms to maintain the same kind of public political files as broadcast stations. Some platforms have created voluntary transparency databases, but these are inconsistent in completeness and methodology. The result is that the fastest-growing channel in political advertising is also the least consistently disclosed — a structural tension that disclosure reformers have flagged repeatedly. When outside groups, particularly those organized as 501(c)(4)s that are not required to disclose their donors, shift money toward digital channels, the combination of dark money and weak platform disclosure can make the spending nearly impossible to reconstruct from public data alone.

In illustrative terms: digital might represent anywhere from a quarter to a third of a modern composite political ad budget, a share that would have seemed implausible a decade ago and may continue to rise.

1. The broadcast eraA single local-news spot reaches a broad market; lowest unit rate makes it the default buy.
2. Cable's targeting riseGeographic zones and network profiles let buyers concentrate on persuadable segments.
3. Digital overtakesSearch, social and programmatic add granular targeting and real-time feedback — with thinner disclosure.
4. The CTV frontierStreaming video blends TV's weight with digital targeting; it is the current largest blind spot.

05Connected TV: The Fast-Moving Frontier

Connected TV — streaming video delivered through internet-connected devices, including smart TVs, streaming sticks, and gaming consoles — has emerged as the most-discussed growth category in political advertising. CTV combines the visual and emotional weight of television with targeting capabilities closer to digital. Buyers can serve political video ads to specific audience segments watching streaming content, rather than buying a broad daypart on a linear channel. The audience is large and growing as cord-cutting accelerates, and the inventory now includes premium streaming services that carry advertising alongside on-demand content.

The dollars moving into CTV are real and increasing. From a near-zero base a few cycles ago, CTV has grown to represent a meaningful single-digit-to-low-double-digit share of political video budgets in well-funded campaigns and outside group efforts. The exact share varies significantly by race type, market, and the sophistication of the buyer, but the directional trend is unambiguous — more money is flowing in, and the channel is being taken seriously by the largest spenders, including well-capitalized Super PACs that operate without the lowest-unit-rate constraints that give candidate committees an advantage on broadcast.

Disclosure for CTV is even patchier than for other digital channels. CTV ads are delivered through a complex supply chain involving streaming platforms, programmatic ad exchanges, and data brokers, and no comprehensive public filing requirement exists. Some CTV inventory is sold through broadcast affiliates' streaming apps, which may bring it partially within FCC disclosure frameworks, but most CTV buying falls outside any mandatory transparency regime. For anyone trying to follow political money across channels, CTV is currently the largest blind spot.

06Reading the Split

The channel breakdown of a political ad budget is not just a media-planning artifact — it is a disclosure map. Broadcast spending is well-lit: FCC public files, lowest-unit-rate compliance, and geographic attribution make it the most traceable category in political advertising. Cable is somewhat less transparent but still substantially disclosed. Digital and CTV operate in a weaker disclosure environment, and the money moving into those channels carries less accountability with it.

That asymmetry matters for watchdog work. A composite picture of any large political ad buy will show the disclosed portion — broadcast and some cable — and a less-documented remainder in digital and streaming. As the two lines cross and digital overtakes traditional television in total share, the disclosed portion of the total picture will shrink unless disclosure rules evolve to cover the new channels. That is not a partisan concern. It is a structural feature of a system in which the law governing transparency was largely written for a broadcast-dominated world that no longer fully exists.

For now, the best available data on political ad spending comes from combining FCC public files, voluntary platform databases, and the expenditure reports that campaigns and outside groups file with the FEC and state election agencies. No single source gives the complete picture. The channel split is, among other things, a reminder that following political money is an exercise in assembling partial evidence — and that the fastest-growing parts of the picture are, almost by design, the hardest to see.

Who's who

Every figure here is an illustrative composite, rounded for clarity. See How We Count for the method — we model no single race, party, or candidate.