The decisions to suspend conscription (late 2010) and to phase out nuclear energy (shortly after the Fukushima disaster in 2011) broke with long-term principles of the CDU, moving the party into a more socially liberal direction and alienating some of its more conservative members and voters. At its November 2011 conference the party proposed a "wage floor", after having expressly rejected minimum wages during the previous years. Psephologist and Merkel advisor Matthias Jung coined the term "asymmetric demobilisation" for the CDU's strategy (practised in the 2009, 2013 and 2017 campaigns) of adopting issues and positions close to its rivals, e.g. regarding social justice (SPD) and ecology (Greens), thus avoiding conflicts that might mobilise their potential supporters. Some of the promises in the CDU's 2013 election platform were seen as "overtaking the SPD on the left". While this strategy proved to be quite successful in elections, it also raised warnings that the CDU's profile would become "random", the party would lose its "essence" and it might even be dangerous for democracy in general if parties became indistinguishable and voters demotivated.