Door-to-Door Canvassing vs. Phone Banking: Which Wins More Votes?

If you have 100 hours to spend reaching voters, how should you split them? Door knocking, phone banking, and texting all work, but they work differently. The research consistently puts door knocking on top per contact — but each channel has a role, especially at the local level.

This post compares them honestly so you can plan a mix that fits your campaign and your bandwidth.

For the broader playbook, see Door-to-Door Canvassing: The Complete Playbook.

The Headline Comparison

Channel	Voter persuasion lift	Voter turnout lift	Cost per contact (volunteer-driven)	Best use
Door-to-door	1%–7%	+1% to +4% turnout	$1–$3	Persuasion + ID
Phone bank (live)	0.5%–2%	+1% to +3% turnout	$0.50–$2	GOTV + ID
Text bank	0% (basically no persuasion)	+0.5% to +2% turnout	$0.05–$0.30	GOTV + reminders
Direct mail	0%–0.5%	+0.5% turnout	$0.75–$2	Name recognition

The research most often cited: meta-analyses by Donald Green and Alan Gerber summarizing field experiments find door knocking produces the largest per-contact effect — but it's also the most expensive channel by labor hours.

Door-to-Door: The Premium Channel

What it does best:

• Persuades undecided voters (real conversations move minds)
• Identifies supporters at scale
• Builds candidate-voter familiarity that compounds
• Generates the data foundation for everything else

Where it struggles:

• Doesn't scale infinitely (you have a doors-per-hour ceiling)
• Weather and daylight dependent
• Some voters aren't home no matter when you try

When to use heavily:

• Months 1–4 of the campaign (the foundation)
• Persuasion and ID work
• High-priority voter segments (super voters, mid-propensity unaffiliated)

See How Many Doors Can You Knock Per Hour?.

Phone Banking: The Scalable Channel

What it does best:

• Reaches voters you can't catch at home
• Confirms supporter status efficiently (faster per voter than doors)
• GOTV reminders in the final week
• Older voters often respond better to phone than door

Where it struggles:

• Call answer rates are low (often 10–20%)
• Less persuasive per contact than door knocks
• Easier to brush off
• Spam-blocking apps screen out unfamiliar numbers

When to use heavily:

• Final 2 weeks of the campaign (GOTV chase calls)
• Supplement to canvassing — call voters you couldn't catch at the door
• Voter targeting where doors are inefficient (rural areas, very dense apartment buildings without buzzer access)
• Volunteer engagement when weather kills canvassing

See Phone Banking for Local Campaigns.

Text Banking: The High-Volume Channel

What it does best:

• Reminds supporters about polling locations and times
• High open rates (~95% of texts are read)
• Cheap per contact
• Voters can respond on their schedule

Where it struggles:

• Almost no persuasion power
• Restrictive compliance environment (TCPA rules)
• Requires explicit consent for automated/peer-to-peer at scale
• Easily ignored if not personalized

When to use heavily:

• GOTV reminders the day before and morning of election day
• Confirming supporters' polling locations
• Volunteer recruitment to known supporters
• Donor asks (sparingly)

See Text Banking for Local Campaigns.

Direct Mail: The Visibility Channel

What it does best:

• Reaches everyone, including unreachable households
• Brand and name awareness
• Last-week visibility for undecided voters

Where it struggles:

• Very low persuasion lift
• Expensive ($0.75–$2 per piece, full cycle)
• Often discarded unopened
• Harder to target precisely than digital

When to use:

• 1 mailer in the final 2 weeks for most local campaigns
• Specifically to high-propensity undecided voters
• Endorsement mailers if you've earned key endorsements

The Mix: A Working Allocation

For most local campaigns, here's a defensible allocation of voter-contact effort:

Phase	Door	Phone	Text	Mail
Months 5–3	90%	5%	0%	5%
Months 2–1	70%	15%	5%	10%
Final 2 weeks	50%	25%	15%	10%
Election week	30%	35%	30%	5%

The pattern: doors dominate early (you're persuading and identifying), phones and texts spike late (you're mobilizing supporters you've already identified).

When to Lean Harder Into Phones

A few scenarios where phones become more important:

• Rural districts where doors are too spread out to canvass efficiently.
• Districts with lots of apartment buildings with buzzer access (which slows canvassing).
• Bad weather seasons (winter campaigns, hot summer regions).
• Older voter targets who tend to respond better to phone outreach.
• Final 72 hours when you've identified more supporters than you can door-knock again.

When to Lean Harder Into Texts

• The final 24–48 hours of the campaign, for GOTV reminders.
• Confirming polling location and hours for supporters.
• Volunteer mobilization for election day shifts.
• Quick "thank you" follow-ups after a yard sign placement or donation.

What About Digital Ads?

Digital advertising (Facebook, Instagram, Google) gets a lot of attention but has limited utility for local races. The reasons:

• Targeting is imprecise at the local district level
• Most voters in a local race already know the candidates (or aren't on social)
• Cost per useful impression is high
• Voters don't decide local races based on a Facebook ad

A small Facebook ad budget ($300–$1,000 over a campaign) is reasonable for name recognition. Anything more is usually waste. See Social Media for Local Candidates.

Cost Comparison: Volunteer-Driven Local Campaign

A back-of-envelope cost per useful contact:

• Door knock (volunteer): $1–$3 per contact (volunteer hours + materials)
• Phone call (volunteer): $0.50–$2 per contact (volunteer hours + software)
• Text (peer-to-peer): $0.05–$0.30 per text (platform fees)
• Mail (full color, addressed): $0.75–$2 per piece

For a local campaign with volunteer labor, doors are still cheaper than mail per persuaded vote. Volunteer canvassing is one of the highest-ROI political activities measured.

The Decision Tree

If you're trying to figure out which channel to use right now:

• Is the goal persuasion? → Doors
• Is the goal supporter ID? → Doors first, phones as backup
• Is the goal GOTV mobilization? → All three, in combination
• Is the goal final-week visibility? → Mail + texts
• Can't canvass right now (weather, time of day, etc.)? → Phones

The Bottom Line

Door knocking is the highest-impact channel for a local campaign — and it scales as far as your volunteer base goes. Phones and texts amplify your canvass data. Mail provides visibility.

The mistake to avoid: skipping doors because phones are easier. Phones are easier; they also produce fewer votes per hour. If you can canvass, canvass. Use other channels to fill gaps.

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CanvassLocal is built for the door-knocking layer of your campaign. Combine it with phone/text tools for a full multi-channel operation.