Kilotest: Diagnoses of ID not unique violation by HTML element 1199 on Center for Responsive Politics advanced donor lookup page

Basics

About the page

• URL: https://www.opensecrets.org/donor-lookup/advanced
• Tested 3 days ago on 2026-10-07 at 20:04 by job 261007T1941-ze6
• Summary of results:
  • Rule engines:
    • Called: 12
    • Were able to test: 12
    • Reported any rule violations: 12
  • Violations: 1612
  • Violators: 670
  • Issues: 65
• Download the full technical report (JSON)

About the issue

• Why it matters: User may be pointed to the wrong item
• Priority: highest
• Related WCAG standard: 4.1
• Reported by 4 rule engines (ASLint + Html Checker API + HTML CodeSniffer + QualWeb)
• Violations: 282
• Violators: 213

About the violator

• Tag name: BUTTON
• Text: Sign Up
• Start tag: <button class="MailChimp-submit Button dc-btn" name="subscribe" id="mc-embedded-subscribe-footer" data-validate="submit" data-mailchimp-submit="true" style=";">
• XPath: /html/body/div[7]/div[1]/div[1]/div[3]/div[1]/form[1]/button[1]
• Bounding box: x = 1506, y = 2620, width = 104, height = 43
• Reported by Html Checker API + HTML CodeSniffer + QualWeb

Take me there

Diagnoses

Here is how rule engines diagnose the ID not unique issue for HTML element 1199 of the Center for Responsive Politics advanced donor lookup page.

1. Duplicate id attribute value "mc-embedded-subscribe-footer" found on the web page.

   Rule engine: HTML CodeSniffer (Squiz Labs)

   Rule: E-WCAG2AAA.Principle4.Guideline4_1.4_1_1.F77

2. Duplicate ID mc-embedded-subscribe-footer.

   Rule engine: Html Checker API (World Wide Web Consortium)

3. [failed]

   Rule engine: QualWeb (University of Lisbon)

   Rule: QW-BP30