Speaking in the old town square of Seligenstadt near Frankfurt late yesterday, the woman affectionately dubbed "Mutti" or mum by some made the case that her conservative government is the most successful since reunification in 1990.
Undeterred by some hecklers, she pointed at achievements in health, education and aged care as she kicked off a whirlwind campaign tour that will see her speak at 56 events in 40 days.
"Her speech was extraordinary," gushed one supporter, economics student Christoph Koser, 24. "She manages to engage us in her party because in her programme there is something for everyone."
Merkel, despised in parts of crisis-hit Europe for insisting on tough austerity, is popular in Germany where many see her as a responsible guardian of the public purse.
Pushing her message of fiscal discipline, Merkel told the crowd: "We have seen in Europe what happens when debts are too high. Growth on borrowed money -- that's impossible."
The launch ahead of the September 22 vote came as new data showed the German economy grew 0.7 per cent in the second quarter, helping propel the eurozone out of its stubborn recession.
"She has become something like the mother of the nation, in quotation marks," said political scientist Oskar Niedermayer of Berlin's Free University.
"A person like you and me, who has not lost her head like many other politicians, who has the confidence of the people, seems natural and has the image of the carer-in-chief."
Niedermayer said that in Germany, where the jobless rate is 6.8 per cent, the eurozone crisis seems like an abstract threat to many, and that "the citizens believe she has steered Germany through the crisis".
Merkel's personal popularity lead over her top challenger Peer Steinbrueck of the Social Democratic Party (SPD) has narrowed a few points but remains huge at 54-23 per cent, said the latest Forsa institute survey.
