B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Aging
13%
13% -- purchase intent rate for viewers of national-only ad campaigns (2024)
13% of viewers were more likely to purchase after seeing a national-only ad campaign according to a 2024 Harris Poll for Locality.
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Lighthouse Research Team
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Evidence graded
Value
13%
Unit
Percentage
Data Vintage
2024
Entity
Evidence Quality
B
Strong, reliable evidence
Sourced from a well-regarded research firm or industry leader with transparent methodology and a reasonably large sample.
Single source - not yet corroborated
Score breakdown
Extraction
75
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
Harris Poll for Locality
Primary
Tier B
https://www.fieldtrip.agency/post/top-media-planning-and-buying-agencies-for-national-brands ↗
Source Article
Top 15 Media Planning and Buying Agencies for National Brands
Sergei
Published:
November 28, 2025
Updated:
August 21, 2026
Media planning at scale demands precision, timing, and a creative instinct only a few agencies truly master.
National brands face a different game: bigger budgets, broader audiences, higher stakes.
With U.S. retail media ad spend expected …
Original Research
Harris Poll for Locality
· Original study ↗
Methodology
Harris Poll survey for Locality
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
viewers of national-only ad campaigns: 13% purchase intent rate. Source: Harris Poll for Locality (2024). Via Lighthouse Intelligence -- https://lighthousedata.io/data/national-ad-purchase-intent-2024
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<blockquote cite="https://lighthousedata.io/data/national-ad-purchase-intent-2024" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>13%</strong> -- purchase intent rate for viewers of national-only ad campaigns<br><small>Source: Harris Poll for Locality (2024) · <a href="https://lighthousedata.io/data/national-ad-purchase-intent-2024" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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