Though the support in favor of Scottish independence is still lagging behind the no vote, in the most recent poll for Scotland on Sunday, the yes votes have risen by about 4 percentage points since last month’s poll.

During the same period, support for a no vote has increased by two percentage points to 47 percent. Undecided votes fell 7 points to 14 percent.

The poll also asked about Scottish First Minister Alex Salmond’s plan to keep the pound as the official currency, more than  half (52 percent) said they thought the Scottish Government’s currency plans were “unconvincing.” Just 26 percent were convinced by the currency plans. The remaining 22 percent were undecided.

The currency plan has also come under fire by English politicians. Britain’s three main political parties, the Conservatives, Labour and the Liberal Democrats, all are not in favor of letting Scotland keep using the pound.

On September 18, Scotland will vote on the independence referendum.

A spokesperson for Better Together, an anti-independence group, said: “The currency matters. It matters to our jobs. It matters in terms of how much we pay for our rent and our mortgage and it matters to our pensions, savings and benefits.

“This poll shows people are rejecting, by a margin of two to one, the risk and uncertainty of independence. If we say no thanks, we can have the best of both worlds in Scotland: a strong Scottish Parliament with more powers guaranteed and the strength, security and stability of the UK.”

“We have a resilient economic system and reserves of one of the most important things for an independent estate: power, power through the assets of oil and also through the potential of wind energy. In this, Scotland is disproportionately endowed compared to almost all other European countries,” said Scottish historian Sir Tom Devine who recently switched his vote from No to Yes on the independence referendum.