EDINBURGH, Scotland (AP) — Scottish lawmakers voted Tuesday to seek a new referendum on independence, to be held within the next two years — an unwanted headache for the British government as it prepares to push the European Union exit button. The Edinburgh-based legislature voted 69-59 to back First Minister Nicola Sturgeon's call to ask the British government for an independence vote. The Scottish parliament had been due to vote on Sturgeon's referendum demand last week, but the session was adjourned after Wednesday's extremist attack in London. Sturgeon's referendum call was backed by the governing Scottish nationalists and the Greens, and opposed by the Conservative and Labour parties.