Kilotest: Diagnoses of ID not unique violation by HTML element 474 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: FORM
• Text: Please enter a valid email address … 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[3]/div[4]/div[2]/div[3]/div[2]/div[1]/form[1]
• Bounding box: [not obtained]
• Reported by ASLint

Diagnoses

Here is how rule engines diagnose the ID not unique issue for HTML element 474 of the Center for Responsive Politics advanced donor lookup page.

1. Attribute <code>id="mc-embedded-subscribe-footer"</code> should be unique. It has been defined 3 times.

   Rule engine: ASLint (eSSENTIAL Accessibility)

   Rule: duplicated_id_attribute