Will the mainstream parties still have a majority after the next German Bundestag election?

Resolves after the next German federal election (scheduled for no later than March 2029, unless early elections are called).

Definition of "mainstream" Parties:

Included as "mainstream": CDU/CSU, FDP, SPD, Greens

Not included as "mainstream": AfD, BSW, Die Linke (Left Party)
Other parties will be classified based on their policy positions relative to this spectrum

"Majority" means collectively holding more than 50% of seats in the Bundestag