LONDON, Nov. 16 (Xinhua) -- A poll of Britons taken after Prime Minister Theresa May unveiled the Brexit agreement between her government and the European Union (EU) has shown that more oppose the proposed deal than support it.

The poll by polling organization YouGov found that 42 percent of those polled oppose May's Brexit deal, based on what they have seen and heard so far, with 19 percent supporting it.

The statistics, as of Friday, showed that a further 39 percent of poll respondents said they "don't know" at this stage whether they support May's deal, indicating that the amount of support for the prime minister's deal could change greatly.

Those who voted remain in the EU in the June 2016 Brexit referendum and those who voted leave the EU are roughly united in their opinion of the deal with 42 percent of leave voters opposed, alongside 47 percent of remain voters.

A total of 44 percent of poll respondents think that Britain could have negotiated more favorable terms with the EU, with 19 percent saying the Brexit agreement is the best possible.

YouGov questioned just over 3,000 adults in a sample weighted to reflect the demographics of adults in Britain.