With our nation suffering a leadership void, those pushing for culture re-defining same-sex marriage are filling the space, using the Parliament with great effect.

The Greens, Labor's Left and sections of the media are obsessed with it.

But despite all their apparent momentum, they have not achieved their objective and may never.

This is what has happened in the two short weeks Parliament has been back since the Christmas recess.

Last week, Greens Senator Sarah Hanson-Young successfully established a Senate Inquiry into her failed 2010 same-sex marriage bill.

This will be the second time in two years the Senate has inquired into her bill.

But the Greens believe in legislation by fatigue and you have to give them full marks for persistence.

On Monday Labor MP Stephen Jones rose in the House of Representatives chamber to move his bill on same-sex marriage which is similar to Hanson- Young's.

This is part of Labor breaking its and Prime Minister Gillard's election promises not to change the Marriage Act 'if we're re-elected'.

Also on Monday, the Reps’ only Greens member, Adam Bandt, teamed up with Tasmanian Independent Andrew Wilkie, to also move a same-sex marriage bill.

This bill is designed to assure Christians that they have nothing to fear from same-sex marriage and that churches will not be forced to 'marry' same-sex couples against their religious teachings.

For anyone to take these men seriously, they would have to believe that the gay activists have had a sudden change of heart.

Their aggressive intolerance to Christian teaching on marriage and the idea that wherever possible a child is entitled to its biological mother AND father is breathtaking.

Only the naive believe the Wilkie/Bandt proposed exemption would stand in the long term, as overseas experience shows.

Not all of the Parliamentary action is from the radical left.

Liberal MP Warren Entsch, says he's against gay same-sex marriage but has suggested he might move his own private members bill for marriage-mimicking civil unions.

The gay lobby are dead against civil unions and will stop at nothing short of redefining marriage.

While civil unions may emerge as a political compromise, they will not provide a long-term settlement.

So what are we to make of all this?

It is unlikely there will be any vote on same-sex marriage until the completion of the Senate Inquiry.

It is now open for written submissions from the public and these are due on April 2. We should all write a short submission and e-mail it to the inquiry's secretariat because in politics, especially in the current hyper-cynical environment where election promises mean nothing, the only currency is numbers.

Sorry to be so blunt but until we can restore principled public leadership, this is how it is.

The inquiry will report on May 25 and it is likely a vote on one or an amalgamation of the bills will be held in June before Parliament's winter recess.

Many people are wondering what the chances are of a bill succeeding at this time.

ACL is confident the Coalition wants to differentiate itself from Labor which is bleeding credibility badly because it has shamelessly jettisoned so many election promises.

If the Coalition keeps its election promise, its numbers along with a core of Labor MPs and Senators who will vote against same-sex marriage, will be enough to preserve marriage in our culture for now.

Despite mixed public messages from some Coalition leadership figures, ACL has been assured the Coalition will hold the line.

We believe the battle for marriage can be won and we must trust God in the midst of all this.

One Senator not afraid to nail his colours to the mast is Ron Boswell from Queensland.

He told reporters waiting at the doors at Parliament House this week:

‘‘If you are going to have a society, a society must be based on the family and marriage underpins the family."

He said moving towards a society that openly embraced same-sex marriage was a ‘‘very dangerous course’’.

‘‘Thank goodness, I think the numbers are not there for it to get through,’’ he said.