The  row that erupted yesterday over Labour’s links with the unions  following the Total Politics report of Oona King’s shindig at Canary  Wharf is more revealing than just the comments of a person at a party. 
Total  Politics reported Oona supporters complaining about the selection  system and timetable for choosing Labour’s candidate for mayor,  including this:   
"The  problem with the trade-union system is that it is rather outdated,"  replied one person on Oona's team. He continued: "Unions don't really do  anything except give money... I shouldn't say that."
Oona  King’s campaign team were in damage-limitation mode all day but Total  Politics stood by its story. The reporter, Jess Freeman posted again:  
“To just confirm my journalistic integrity and that of Total Politics, I will confront any criticisms right now. I have not misquoted a team member,  I did not mishear and nor am I blatantly lying. And, to clarify, to  assume that I can forget two brief lines about trade unions is a little  bit rich. In fact, I held sustained conversations about unions all night.”
It  is not at all a surprise that such a comment could be made by someone  to a reporter at an Oona King party. It is consistent with the line of  the campaign from the outset. 
There  is an old phrase the fish rots from the head down. In the case of the  Oona King campaign, the rot started very early on, with the chair of the  campaign Jim Fitzpatrick MP seriously proposing to remove the trade unions from the electoral college altogether, in a letter to the general secretary leaked to Labourlist.  
The views reportedly expressed at Oona’s party flow naturally from that thinking.
Trade  union members pay their subs to the Labour party and make it viable.  That alone entitles them to a say. In a time of opposition, when most of  the big private money will flow to the party of government, that is  even more vital. 
But  more than that they are our link to millions of people giving us an  invaluable connection to issues in the workplace and on those things  that affect peoples’ lives directly, such as childcare or pensions.  Trade union members have a democratic right to participate in this  selection, just as in the leadership. We need to defend the union link,  not concede to Tory arguments about it.
In  London the trade union agenda directly contributed to policies under  Ken as mayor like the living wage, the importance of protecting the  pension rights of transport workers and the recognition of risks faced  by construction workers. 
The  value of the unions’ contribution is equally in the campaigns that Ken  Livingstone has taken up in this selection. His economic policy  statement develops a number of points flowing from the work of the unions, such  as the need to deepen the promotion of the living wage. Alongside the  Unite union he recently met with Billingsgate fish porters whose licenses are under threat; and his  campaign to promote and protect London’s valued pubs was launched with  the GMB union.  
It’s for these reasons that Ken is building up such big support. 
Of  the nine affiliated trade unions in London, seven are now recommending  Ken Livingstone to their members. This is even more clearly the case  when one looks at the relative weight of the trade union affiliates  backing Ken: Unite has 120,000 affiliated members in London; Unison  63,000; the CWU 54,842; GMB London 47,142;  GMB Southern 21,000; UCATT  5,000; and TSSA 4,750. 
Oona King will be recommended to the members of USDAW and Community with 25,021 affiliated members and 1,739 respectively.  
The  differences on the unions are indicative of the choices more broadly in  this campaign – between one that is seeking to unite the London labour  movement as a whole in order to maximise the opposition to the cuts and  higher fares of Boris Johnson’s administration and the ConDem  government, and the other that would weaken our campaign between now and  2012 by conceding territory to the Tories, on Royal Mail privatisation,  means testing and cuts. 
We need the London trade unions if we are going to win in 2012 and remove Boris Johnson.
Louise tweets at @LouHaigh