Here is the best article I could find on this.
The Greens' surge in popularity comes after the party on Monday named co-chair Annalena Baerbock, 40, as its first candidate for chancellor. The nomination of Ms Baerbock, a centrist who advocates a greener economy and a tougher foreign policy stance on Russia and China, has been widely praised.
Hopefully the Christian Democrat Union won't be on top any more.
Could be that they actually are tougher on Russia while doing little more than sabre rattling and light sanctions on China.