Peer-to-peer and broadcast are the two ways campaigns text at scale, and they do different jobs. Use peer-to-peer to start conversations, persuade, and make first contact. Use broadcast to move an opted-in list fast. Most serious programs run both, because the format you pick should follow the goal, not the other way around. This complete guide breaks down how each works, the legal and practical trade-offs, exactly when to reach for which, and how to combine them into a single pipeline.
What's the difference between P2P and broadcast?
The difference is who sends and how many at once.
| Peer-to-peer (P2P) | Broadcast | |
|---|---|---|
| How it sends | A person sends each message individually from a queue | One message to a whole list, automated |
| Speed | Slower, paced by people | Instant, thousands at once |
| Consent posture | Human intervention often sits outside the strict autodialer standard | Expects express opt-in |
| Reply handling | Real-time, one-on-one conversations | Automated keywords (STOP, HELP, JOIN) |
| Best for | Persuasion, voter ID, recruitment, first contact | GOTV, announcements, fundraising to supporters |
| Cost | Per message plus volunteer labor | Per message |
| Labor | People-intensive; runs on volunteers | Minimal; one staffer can send |
Peer-to-peer means a real person manually initiates each send. Because a human is in the loop, P2P generally falls outside the TCPA's autodialer definition, which is what triggers the strict prior-express-written-consent standard. That's why campaigns lean on it for initial voter contact and persuasion, where a documented prior opt-in may not exist. See what is P2P texting and how P2P platforms work.
Broadcast sends one message to many at once, automatically. It's fast and scalable, and it expects a clean opt-in because it's automated. It's the workhorse for reaching an opted-in list on a deadline. See what is broadcast texting.
When should you use peer-to-peer texting?
Reach for P2P when the goal is a conversation:
- Persuasion. Making the case to undecided voters, one at a time, where a reply matters. A persuasion script opens a conversation a broadcast can't.
- Voter ID and surveys. Asking a question and tagging the contact by their answer. See voter ID by text.
- Volunteer and event recruitment. A personal ask converts better than a blast.
- First contact. Reaching people you don't yet have express opt-in from, under the human-intervention posture.
- Follow-up. Continuing a thread a voter already started.
The payoff is reply rate and data. A volunteer can hold a couple hundred real conversations in an afternoon, and every reply teaches you something about that voter. The cost is that P2P needs people and time, which is why it runs on text banks. Running one well, recruiting, training, and coordinating volunteers, is its own discipline.
When should you use broadcast texting?
Reach for broadcast when the goal is speed and reach to people who already opted in:
- Get-out-the-vote. The final-stretch reminders to your opted-in universe. See the 72-hour GOTV plan.
- Event announcements. A rally, a town hall, a deadline. See event RSVPs by text.
- Fundraising asks. Especially around end-of-quarter, where speed and open rate beat email. See SMS fundraising.
- Rapid response. Getting a message to the whole list in minutes when news breaks. See rapid response texting.
The payoff is scale: one message, a whole list, delivered in minutes. The requirement is a clean opt-in, because broadcast is automated and held to the express-consent standard.
Which is more compliant?
Neither is a shortcut around the rules, and treating P2P as a loophole is a mistake. P2P changes the consent question because a human initiates each send, but carrier registration, sender identification, STOP handling, content rules, and state law all still apply to both. And "a human pressed send" has to actually be true, a tool that automates sending and calls it P2P invites a plaintiff to argue you behaved like an automated system. Capture consent for both, and see what consent a campaign needs. The legal distinction is real and useful, but it's narrow: it affects the consent standard for first contact, not the rest of your obligations.
What does each cost?
Broadcast is priced per message, so its cost scales with list size and frequency, cheap reach. P2P adds the cost of the people sending, since a human touches every message, so it carries both a per-message component and volunteer or staff labor. Per contact, P2P is more expensive, but it delivers conversations and data a broadcast can't, so the higher cost buys higher value for persuasion and voter ID. The budgeting move is to use each for what it's efficient at: broadcast for volume, P2P for the high-value conversations that justify the labor. See the cost of political texting.
Do you have to choose? How to combine them
No, and you shouldn't. The strongest programs run both and hand off between them. Use P2P to make first contact and identify supporters, move the people who opt in onto the broadcast list, then use broadcast to mobilize that list at GOTV. The two formats are a pipeline, not an either/or: P2P builds and warms the relationship, broadcast activates it at scale.
Think of it as a funnel. At the top, P2P and list-growth tactics bring people in and identify who they are. In the middle, segmentation sorts them by support and issue. At the bottom, broadcast mobilizes the opted-in, identified universe for turnout and fundraising, with P2P reserved for the high-touch pieces like a ride-to-the-polls offer. A campaign that runs only broadcast never builds the relationships; one that runs only P2P can't mobilize at scale. Run together, they cover the whole arc.
Which is better for GOTV?
Mostly broadcast. GOTV is about speed and reach to an opted-in list, so a well-timed broadcast is the workhorse, one message, the whole universe, in minutes. Keep P2P for the higher-touch pieces where a conversation matters: the ride offer, the undecided who needs a real answer, the volunteer chase. Running a text bank for those final-stretch conversations alongside the broadcast blasts is a common and effective play.
Frequently asked questions
What is the difference between P2P and broadcast texting?
Broadcast sends one message to a whole list automatically and expects express opt-in. P2P has a person send each message individually, which suits persuasion and first contact and sits under a different consent standard because a human initiates each send.
Is P2P texting legal without prior written consent?
P2P with genuine human intervention generally falls outside the autodialer definition, so the strict written-consent standard often doesn't control. You should still capture consent and keep a clean opt-in trail, because carrier rules and complaints don't care about the loophole.
Which is better for GOTV?
Broadcast, mostly. GOTV is about speed and reach to an opted-in list, so a well-timed broadcast is the workhorse. Keep P2P for the higher-touch pieces, like a ride-to-the-polls offer.
Is P2P or broadcast more expensive?
Per contact, P2P, because it adds volunteer or staff labor on top of the per-message cost. But it delivers conversations and data a broadcast can't, so the higher cost buys higher value for persuasion and voter ID.
Can you use both in one campaign?
Yes, and you should. Use P2P to make contact and identify supporters, then move opt-ins onto the broadcast list and mobilize them at scale. They form a funnel: P2P builds relationships, broadcast activates them.
Keep reading: how to run a text bank and the 72-hour GOTV plan. For the legal posture of volunteer texting, see Campaign Verify.