devastated political landscape with a destroyed SPD
The decline of the SPD can hardly be blamed solely on Merkel. Schröder's Agenda 2010, Lafontaine's personal vendetta and the incompetence of various SPD leaders are the main reason for the decline of the once great party. It is not the responsibility of any politician to ensure that their political opponent stays relevant or powerful.
birth of a far right party trying to fill the vacuum
The AfD has so far done very little to fill this "vacuum". They only stand for a resistance against the refugee policy, but when Weidel was recently asked in an interview regarding other topics, she merely stated that "the party still needs to decide on those issues." I doubt that they will reclaim much ground from the CDU here. Many "conservative" values are simply toxic for elections, because they are utterly out of touch with Germans.
, which grows in every survey
Thanks to the CSU. The truth is that the refugee crisis was calming down, and with it the AfD was stagnating, until Seehofer made it relevant again. It is insanity, really. We have so many more pressing issues, yet they decide to bring up this again. The emergence of a far-right wing party in Germany was always only a matter of time. All it needed was an excuse, and the refugee crisis delivered one. If not for that, something else would have come up. Germany is not immune to trends that have also happened in other countries.
Merkel-Republic to favorable.
We shall see. Though future historians will no doubt be baffled about how much the refugee crisis dominated European and German headlines compared to ttue scale of the problem. Nevertheless I am grateful that at very least, Merkel-Germany will serve as a shining contrast to the rest of Europe. Particulary the CDU owes a huge debt to Merkel. The CDU failed the last time when it came to making a tough, but in hindsight obbviously right decision when it opposed Brandt's Ostpolitik. At least now as a CDU member I won't have to look back in shame on history in 30 years from now.