France votes in presidential runoff If Sarkozy loses, he will be one of a series of European leaders swept from office France is a key player in plans to lead the eurozone out of its debt crisis Hollande appeals for unity as the incumbent urges the nation to support him Paris (CNN) -- France votes Sunday in a presidential runoff dominated by economic concerns as incumbent Nicolas Sarkozy battles a wave of discontent over his inability to rein in unemployment. The runoff pits the incumbent against Francois Hollande, who if elected would be the nation's first left-wing president since Francois Mitterrand left office in 1995. Sarkozy has defended his economic record despite low growth and unemployment at about 10%, saying the impact of Europe's debt crisis could have been far worse. France is a key player in plans to lead the eurozone out of its debt crisis, making the election vital to the region. If Sarkozy is defeated, he will be one of a series of European leaders swept from office during the eurozone economic crisis, including the Greek and Italian prime ministers. Concerns over the economy, unemployment and immigration have been at the forefront of the French election. In his final address Friday, Sarkozy, of the center-right UMP party, picked up on the debate over immigration as he appealed for the nation's support. The two rivals traded insults last week in the only televised head-to-head debate of the campaign. Both candidates reached out to France's undecided voters since the first-round vote on April 22 left them the only two standing. Centrist Francois Bayrou, who took 9% of the first round vote, delivered a boost to Hollande's campaign Thursday when he said he would vote for the Socialist and urged his supporters to vote according to their conscience. France's vote is the same day as the Greek parliamentary election, where the austerity crisis gripping the nation is expected to be at the forefront.