Kilotest: Diagnoses of ID not unique violation by HTML element 1577 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: DIV
• Text: Please enter a valid email address … }
• Start tag: <div style="margin-top:10px; color:#fff; font-size: 16px;" id="mce-message-footer" data-mailchimp-message="true">
• XPath: /html/body/div[4]/div[8]/section[1]/div[2]/div[2]/div[1]/div[2]
• Bounding box: [not obtained]
• Reported by Html Checker API + HTML CodeSniffer

Diagnoses

Here is how rule engines diagnose the ID not unique issue for HTML element 1577 of the Open Secrets page.

1. Duplicate id attribute value "mce-message-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 mce-message-footer.

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