diff --git a/codility_new/dominator.py b/codility_new/dominator.py
new file mode 100644
index 0000000..525bdca
--- /dev/null
+++ b/codility_new/dominator.py
@@ -0,0 +1,28 @@
+# https://app.codility.com/programmers/lessons/8-leader/dominator/
+def solution(A):
+    stack_size = 0
+    stack_value = 0
+    position = -1
+    for i in range(len(A)):
+        x = A[i]
+        if stack_size == 0:
+            stack_size += 1
+            stack_value = x
+            position = i
+        elif x == stack_value:
+            stack_size += 1
+        elif x != stack_value:
+            stack_size -= 1
+
+    if stack_size == 0:
+        return -1
+
+    count = 0
+    for x in A:
+        if x == stack_value:
+            count += 1
+    
+    if count > len(A) / 2:
+        return position
+
+    return -1