Repository: vacanza/holidays (python)

Issue:
Add 3 May 2025 polling day to Singapore data
Please add 3 May 2025 as a public holiday for Singapore, "Polling Day".

Source: https://www.mom.gov.sg/newsroom/press-releases/2025/0415-public-holiday-on-polling-day_3-may-2025

@arkid15r and @KJhellico, thanks for all your work and the great improvements to this project!

Pull request:
Update Singapore holidays: 2025 Polling Day on May 3rd
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  Thanks for contributing to holidays!
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## Proposed change

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  Describe the big picture of your changes.
  Don't forget to link your PR to an existing issue if any.
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- Add Singapore's 2025 polling day.
- Update special holidays sources from 2020 onwards to use the https://mom.gov.sg source.
- Add every special holiday entry to `test_special_holiday` .

Resolves #2486.

## Type of change

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  Type of change you want to introduce. Please, check one (1) box only!
  If your PR requires multiple boxes to be checked, most likely it needs to
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- [ ] New country/market holidays support (thank you!)
- [x] Supported country/market holidays update (calendar discrepancy fix, localization)
- [ ] Existing code/documentation/test/process quality improvement (best practice, cleanup, refactoring, optimization)
- [ ] Dependency update (version deprecation/pin/upgrade)
- [ ] Bugfix (non-breaking change which fixes an issue)
- [ ] Breaking change (a code change causing existing functionality to break)
- [ ] New feature (new `holidays` functionality in general)

## Checklist

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  Put an `x` in the boxes that apply. You can change them after PR is created.
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- [x] I've followed the [contributing guidelines][contributing-guidelines]
- [x] I've successfully run `make check`, all checks and tests are green

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  Thanks again for your contribution!
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[contributing-guidelines]: https://github.com/vacanza/holidays/blob/dev/CONTRIBUTING.md
[docs]: https://github.com/vacanza/holidays/tree/dev/docs/source


Patch:
diff --git a/holidays/countries/singapore.py b/holidays/countries/singapore.py
index efde816d..0686fcf9 100644
--- a/holidays/countries/singapore.py
+++ b/holidays/countries/singapore.py
@@ -307,7 +307,9 @@ class SingaporeStaticHolidays:
 
     References:
         * <https://www.mom.gov.sg/newsroom/press-releases/2015/sg50-public-holiday-on-7-august-2015>
-        * <https://www.straitstimes.com/singapore/politics/singapore-presidential-election-2023-polling-day-on-sept-1-nomination-day-on-aug-22>
+        * <https://www.mom.gov.sg/newsroom/press-releases/2020/0624-public-holiday-on-polling-day---10-july-2020>
+        * <https://www.mom.gov.sg/newsroom/press-releases/2023/0822-public-holiday-on-polling-day---1-sep-2023>
+        * <https://www.mom.gov.sg/newsroom/press-releases/2025/0415-public-holiday-on-polling-day_3-may-2025>
     """
 
     # Polling Day.
@@ -324,6 +326,7 @@ class SingaporeStaticHolidays:
         ),
         2020: (JUL, 10, polling_day_name),
         2023: (SEP, 1, polling_day_name),
+        2025: (MAY, 3, polling_day_name),
     }
 
     special_public_holidays_observed = {
diff --git a/snapshots/countries/SG_COMMON.json b/snapshots/countries/SG_COMMON.json
index bee58afb..0f681bec 100644
--- a/snapshots/countries/SG_COMMON.json
+++ b/snapshots/countries/SG_COMMON.json
@@ -953,6 +953,7 @@
     "2025-03-31": "Eid al-Fitr",
     "2025-04-18": "Good Friday",
     "2025-05-01": "Labor Day",
+    "2025-05-03": "Polling Day",
     "2025-05-12": "Vesak Day",
     "2025-06-07": "Eid al-Adha",
     "2025-08-09": "National Day",


Test patch:
diff --git a/tests/countries/test_singapore.py b/tests/countries/test_singapore.py
index 38d7c504..c0f01988 100644
--- a/tests/countries/test_singapore.py
+++ b/tests/countries/test_singapore.py
@@ -186,6 +186,7 @@ class TestSingapore(CommonCountryTests, TestCase):
             ("2025-03-31", "Hari Raya Puasa"),
             ("2025-04-18", "Good Friday"),
             ("2025-05-01", "Labour Day"),
+            ("2025-05-03", "Polling Day"),
             ("2025-05-12", "Vesak Day"),
             ("2025-06-07", "Hari Raya Haji"),
             ("2025-08-09", "National Day"),
@@ -197,7 +198,16 @@ class TestSingapore(CommonCountryTests, TestCase):
         self.assertNoNonObservedHoliday("2023-01-02")
 
     def test_special_holidays(self):
-        self.assertHoliday("2015-08-07")
+        self.assertHoliday(
+            "2001-11-03",
+            "2006-05-06",
+            "2011-05-07",
+            "2015-08-07",
+            "2015-09-11",
+            "2020-07-10",
+            "2023-09-01",
+            "2025-05-03",
+        )
 
     def test_l10n_default(self):
         self.assertLocalizedHolidays(