Boris Johnson, London’s mayor, said he would back the United Kingdom’s exit from the European Union, a decision that deviated from British Prime Minister David Cameron’s campaign. Cameron has been trying to pull public support behind his effort of making the

Cameron has been trying to pull public support behind his effort of making the UK stay in the European Union in a referendum which is to be held in June.

Johnson, considered one of UK’s most charismatic politicians, said the prime minister failed in his efforts to deliver fundamental reform with an EU deal which was struck on Friday. The mayor said he loves European culture, food and civilizstion but the European project bears the risk of breaking out of democratic control. Johnson cascaded the decision to the prime minister in a text.

“The last thing I wanted was to go against David Cameron or the government, but after a great deal of heartache I don’t think there’s anything else I can do. I will be advocating Vote Leave,” the Reuters quoted Johnson as telling the reporters outside his north London home. “I want a better deal for the people of this country to save them money and to take back control.”

The comment made by Johnson, mayor since 2008 and fellow Conservative who is looked up as a viable contender to lead the party someday, pitted him directly against the prime minister. The move may have the potentiality to erode off support from behind Cameron’s campaign in the June 23 referendum, the Reuters reported.

There are differences in opinions on the issue between both the Conservatives and the Opposition the Labour Party. But the rifts run down deep within Cameron’s own centre-right party.

The Wall Street Journal reported that Labour leader Jeremy Corbyn was earlier skeptic about United Kingdom’s membership in EU, but expressed the party’s support this weekend behind UK’s continued membership in the club.