Conservatives, though, said the amendment, which passed 217 to 209, did not go nearly far enough to win their support for the bill.
The amendment would never go into effect as it is soon challenged in court.
The amendment went through by 271 votes to 156, a majority of 115.
The recommended amendment will go to a vote in 2011.
The amendment went into effect July 1, 1997, and was first applied in the 1998 elections.
Only two such amendments have gone through in the past.
Other amendments could have gone further still, if a majority in the committee had wanted this to happen.
We all know that the written amendment generally goes into rather more detail.
I believe that this amendment goes in the wrong direction.
In my view, this amendment from the Greens goes some way to meeting that.