Fixed error printout in CASE15 Elections

Added a space before "and candidates"

Change-Id: I66c2d5968fc3e8a527eacb0dc256a09c54b29c8c
diff --git a/TestON/tests/HAsingleInstanceRestart/HAsingleInstanceRestart.py b/TestON/tests/HAsingleInstanceRestart/HAsingleInstanceRestart.py
index 0883484..a1652e9 100644
--- a/TestON/tests/HAsingleInstanceRestart/HAsingleInstanceRestart.py
+++ b/TestON/tests/HAsingleInstanceRestart/HAsingleInstanceRestart.py
@@ -1954,10 +1954,14 @@
             oldLeader = oldLeaders[ 0 ]
 
         # Check that each node's candidate list is the same
+        candidateDiscrepancy = False  # Boolean of candidate mismatches
         for candidates in oldAllCandidates:
             if set( candidates ) != set( oldCandidates ):
                 sameResult = main.FALSE
-                failMessage += "and candidates"
+                candidateDiscrepancy = True
+
+        if candidateDiscrepancy:
+            failMessage += " and candidates"
 
         utilities.assert_equals(
             expect=main.TRUE,