The Germans decide on Sunday whether to return the nations first woman chancellor to a second term in office following a lacklustre campaign centered largely on economic issues and a rash of last-minute threats by Islamic extremists. Chancellor Angela Merkel is hoping enough of the nations 62.2 million eligible voters will support her conservative Christian Democratic Party to give them a solid enough standing to form a centre-right coalition with their top partners, the Free Democrats. In one of the final surveys before the polls were to open at 8:00 a.m. (local time) on Sunday, the surveys indicated that the conservatives could capture 33 percent of the vote, while the Free Democrats were supported by 14 percent in the poll by the Forsa institute. That would give them a razor-thin lead in parliament and allow Merkel to break with her partners of the past four years, Germanys other traditional main party, the left-centre Social Democrats. In the Forsa survey they received only 25 percent support from the 2,001 people questioned. The poll gave a margin of error of plus or minus 2.5 percentage points. Among the other parties currently represented in parliament, the Greens polled at 10 percent, just behind the Left party at 12 percent. Despite their predicted status as third-strongest party, both the Christian and the Social Democrats have ruled out a coalition with the Left, which burst onto the political spectrum in 2005 after the ex-Communists banded together with defectors from the Social Democrats, disenchanted by their partys swing to the centre. The Social Democrats, in power since 1998, are facing historical lows. Many analysts have argued they could benefit from a period in the opposition that would let them regroup. Security is tight across Germany, following a rash of threats by Islamic extremists apparently seeking to sway voters by threatening retaliation if they did not pull their 4,200 troops out of the NATO mission in Afghanistan. Both Merkel, and her main challenger, Frank-Walter Steinmeier of the Social Democrats, ignored the threats in their parties final rallies on Saturday and instead focused on the key domestic issues of jobs and economic recovery. Two videos surfaced Fridayone by Al-Qaida and another by the Talibanthreatening retaliation for Germanys military presence in Afghanistan. The Taliban video showed top German landmarks like the Brandenburg Gate in Berlin and Munichs world-renowned Oktoberfest. President Horst Koehler urged Germans go to the polls, recalling that the right to vote was not something to take for granted. People have died for the free, secret and equal right to vote. Its our democracy and we should not weaken it, Mr. Koehler said in a statement published in the Bild am Sonntag weekly.