Following his dismissal from the BfV, Maassen joined the Werteunion (Values Union), an ultra-conservative group within the CDU, which campaigns for strict anti-immigration laws. Its leader, CDU politician Alexander Mitsch, argues that the CDU should not rule out a governing alliance with the far-right Alternative for Germany (AfD). The AfD is a coalition of Eurosceptic, anti-immigrant and neo-Nazi groups that has gained prominence since its establishment in 2013 and currently polls at around 12 percent nationwide. Mitsch’s view goes against the CDU’s recent decision at its annual conference to rule out any collaboration with the AfD and Die Linke, Germany’s main far-left party. Maassen has also given media interviews in which he has criticized the CDU for “moving far to the left” under the leadership of Angela Merkel.

Annegret Kramp-Karrenbauer, who succeeded Angela Merkel to the leadership of the CDU, and is tipped to become Germany’s next chancellor, gave an interview on Saturday, in which she dismissed Maassen’s views as nonsense. Kramp-Karrenbauer, who is currently serving as minister of defense, told the Funke Medien media agency she was pleased that Maassen had been dismissed from the directorship of the BfV. She added that she could not see anything in Maassen’s political views that connected him to the CDU. Kramp-Karrenbauer went on to say that she would not allow the CDU to be “radicalized from the inside” like the United States Republican Party had been radicalized by the Tea Party. This was widely interpreted as a call for Maassen and other Werteunion supporters to either resign or be expelled from the party.

On Sunday, however, Kramp-Karrenbauer spoke to the media again, this time to the Deutsche Presse-Agentur (DPA) news agency, saying that “neither during the [Funke Medien] interview nor elsewhere did I call for a party expulsion procedure” of Maassen and other Werteunion members. She continued by saying that “the CDU is a party with more than 400,000 members. The fact that each one has different opinions is what makes us interesting”. Meanwhile, Maassen told DPA, “it is a mystery to me who advised her to conjure up such thoughts”, referring to Kramp-Karrenbauer’s Saturday interview.

In September and October the CDU will be facing the AfD and several other parties in regional elections that will be taking place in three eastern German states, where the AfD is particularly strong. Many fear that Kramp-Karrenbauer’s party will see its electoral power shrink with many of its voters flocking to the anti-immigration AfD.