Source: The Tribune BUCHAREST, Romania — More than 90 percent of those who took part in a national referendum in Romania supported defining marriage as a union between a man and a woman, but the vote was invalidated as too few people cast ballots, officials said Monday. The Central Electoral Commission said near-final results showed 91.61 percent of voters approved a constitutional amendment to change the definition of marriage — it currently says it’s a union between “spouses.” But the ballot failed to attract the minimum 30 percent turnout for the result to stand. Election officials said just 20.41 percent…