Reuters.
Realizing her own future is tied to that of the EU, Merkel has in the last month softened her rhetoric towards the most indebted euro zone states. Next week she will make a rare joint appearance with former Christian Democrat (CDU) chancellor Kohl.
The German leader's tough approach to the euro debt crisis has boosted her popularity in the last two years and polls show she is in a strong position to win the September 2013 vote.
But she needs to ensure traditional conservatives in her own party maintain discipline in the run-up to the vote after some were angered by her defense of European Central Bank President Mario Draghi's bond-buying plan for stricken euro states - a scheme the German Bundesbank opposes.
Merkel must also convince the broader electorate of the need for closer EU integration, seen as crucial to the currency's long-term survival. A poll this week showed almost two thirds of Germans would prefer to live without the euro and 49 percent without the EU.
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