I have also tried very hard to come up with a non-US example and it is much harder than what it seems. Here go my best tries:
[...]
Italy 2006 (Lower House)
Technically this doesn't work because L'Ulivo did win here; but the election was ridiculously close and they won by only 0.06%
The Italian example does't work at all because you are comparing apples (pluralities for
parties/lists) and oranges (pluralities for
alliances). L'Ulivo as a list got 31.27% which is far more than Forza Italia with 23.72%.
Very good examples can be found in the UK though, particularly the 1997, 2001 and 2005 elections.
