Kilotest: Diagnoses of ID not unique violation by HTML element 1628 on Open Secrets page

Basics

About the page

• URL: https://www.opensecrets.org/
• Tested 3 days ago on 2026-10-07 at 19:57 by job 261007T1941-pfb
• Summary of results:
  • Rule engines:
    • Called: 12
    • Were able to test: 12
    • Reported any rule violations: 12
  • Violations: 2429
  • Violators: 1331
  • Issues: 75
• 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: 588
• Violators: 494

About the violator

• Tag name: FORM
• Text: Do not fill this out if you are a person … Subscribe
• Start tag: <form data-remote="true" data-mailchimp-form="true" class="MailChimp-form u-form js-validate " id="mc-embedded-subscribe-form-footer" name="mc-embedded-subscribe-form-footer" novalidate="">
• XPath: /html/body/div[4]/div[9]/div[1]/div[2]/div[1]/div[1]/div[2]/div[1]/form[1]
• Bounding box: x = 1211, y = 6146, width = 359, height = 43
• Reported by ASLint + Html Checker API + HTML CodeSniffer + QualWeb

Diagnoses

Here is how rule engines diagnose the ID not unique issue for HTML element 1628 of the Open Secrets page.

1. Attribute <code>id="mc-embedded-subscribe-footer"</code> should be unique. It has been defined 4 times.

   Rule engine: ASLint (eSSENTIAL Accessibility)

   Rule: duplicated_id_attribute

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

   Rule engine: HTML CodeSniffer (Squiz Labs)

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

3. Duplicate ID mc-embedded-subscribe-form-footer.

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

4. [failed]

   Rule engine: QualWeb (University of Lisbon)

   Rule: QW-BP30