However full legalisation depends on approval of a bill being examined by the Congress.
The NOP survey found that 51% opposed legalisation, compared with 37% who were in favour.
This compared with 66% against legalisation and 26% in favour in its 1996 survey.
Brazilian President Luiz Inacio Lula da Silva has indicated he backs the legalisation of civil unions.
Not all those problems will melt away with legalisation but they may become easier to manage.
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Against these arguments, the case for legalisation comes in two parts: the ideological and the pragmatic.
However, we reach a different conclusion to you and find that legalisation is not the solution.
And an opinion poll for the Independent on Sunday found resistance to the legalisation of cannabis wavering.
The legalisation of trade in rhino would make overnight millionaires of these key figures in South Africa.
But many conservative lawmakers denounce a path to legalisation for undocumented immigrants as an "amnesty" for lawbreakers.
Any honest proponent of legalisation would be wise to assume that drug-taking as a whole would rise.
The Federal Council of Medicine called for the legalisation of terminations during the first 12 weeks of pregnancy.
Legalisation would work only if those who took advantage of this were held accountable for their own welfare.
But during a visit to Mexico on Monday, Mr Biden had said the US remained opposed to legalisation.
Legalisation might reduce both supply (pushers by definition push) and demand (part of that dangerous thrill would go).
But little is likely to happen without that legalisation of the land occupation.
Hence the second argument: legalisation offers the opportunity to deal with addiction properly.
No, not use of amongst investors and analyists, but by the near legalisation in Colorado and Washington states?
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However, it does not call for the decriminalisation or legalisation of most drugs.
But those promoting legalisation were kept firmly outside the debate in the assembly.
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"I think we have to be conscious of the legalisation that we have and use it when necessary, " he said.
Asked about the legalisation of same-sex marriage and adoption in France, he said other countries should respect Russia's "moral standards".
If nations are unwilling to use measures of that sort, then legalisation is the only option that makes much sense.
To persuade those who do not accept the libertarian argument for legalisation, supporters have emphasised two other lines of reasoning.
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And since gambling is a state rather than a federal issue, any legalisation of online gambling is likely to be patchy.
As a backbench MP, Mr Cameron called on the government to raise a debate at the United Nations on legalisation and regulation.
Legalisation would, if accompanied with suitable regulations, result in a safer product.
Earlier polls had indicated stronger support for the legalisation of gay marriage.
Opinion polls suggest that a majority of Uruguayans support legalisation of abortion.
"This is de facto legalisation using an administrative procedure, " Christian Hooft, vice-president of the Christian Alliance of Evangelical Churches, told La Nacion newspaper.
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