In August 2024, the Federal Cabinet initially recommended 28 September 2025 as the date of the election, which was approved by President Frank-Walter Steinmeier.

On the same day, Chancellor Scholz announced he would submit a motion of confidence in order to hold a snap election; this was initially planned for January 2025 but was brought forward after pressure from the opposition.

Prior to this election, if a party won enough constituencies in a state to exceed its proportional entitlement, it was allowed to keep the so-called overhang seats.

In order to settle electoral law in sufficient time for this election, as an interim measure the court re-introduced the basic mandate clause as it was "until there is a new regulation on the matter".

Gysi committed to run for re-election in his constituency of Berlin-Treptow – Köpenick, with former parliamentary group leader Dietmar Bartsch running for a third time in Rostock – Landkreis Rostock II and former Minister-President of Thuringia Bodo Ramelow – the only Left member to have led a state government – contesting a Bundestag seat for the first time since 2005 in Erfurt – Weimar – Weimarer Land II.

The goal is to capitalize on the three men's relatively high personal popularities and give The Left the best chance possible to win three constituencies and ensure they remain in the Bundestag, and the effort is nicknamed in humorous reference to the their advanced ages.

[37] Polling for ARD showed Pistorius as the most favorably viewed national politician: 60% of voters thought he would be a good chancellor, compared to 42% for Merz and 21% for Scholz.

[38] In a video released on 21 November, Pistorius ended what had become two weeks of public debate by disavowing any interest in running for chancellor and expressing his full support for Scholz.

[40] Scholz's nomination was confirmed at a party congress on 11 January; as is usual for sitting chancellors, the vote was by acclamation rather than secret ballot and he received little opposition.

General secretary Christian Heye flatly conceded the party, which was polling between four and eight percent at the time, had no actual chance of providing a chancellor and said that "we are neither imagining things nor are we megalomanical".

He blamed the "inflation" of the term's usage in forcing their hand to avoid a perceived disadvantage in the campaign, such as missing out on invitations to televised debates.

Automatic approval is granted to so-called "established parties": those that have been continuously represented in the Bundestag with at least five members since the previous election (SPD, CDU, Greens, FDP, AfD, CSU and Left), or those that have been continuously represented in any state parliament with at least five members since that state's last election (Alliance Germany, BSW, and Free Voters).

[47] The committee also determined the validity of a party's claim to represent a recognized minority, which not only exempts them from the five-percent hurdle but also the requirement to submit signatures.

The state returning officer of Hesse, in calling the complaint "far-fetched", pointed to a 2017 court case which found that a minimum level of secrecy (e.g., getting up from one's seat or covering one's ballot with a hand) is sufficient in internal party votes.

[71] Criticism came from the SPD upon the revelation that their coalition partner had apparently not been acting in good faith for weeks: parliamentary leader Rolf Mützenich described himself as "feeling deceived and disappointed" and "horrified" by the controversial language.

[73] In an 18 November interview with RTL and n-tv, FDP general secretary Bijan Djir-Sarai flatly denied the use of the term "D-Day" and stated the party's leadership was not aware of the paper.

On the morning of 28 November, the online news portal Table.Media published excerpts of an eight-page document alleged to be the working paper; it was indeed titled "D-Day Scenarios and Actions" and laid out a strategy as detailed as the original reporting surmised, including strategies to undermine the coalition, communication tactics, and pre-written quotations for Lindner.

SPD acting general secretary Matthias Miersch described Djir-Sarai as "a transparent scapegoat" to protect Lindner and called it "unimaginable" that the party leader would not know of the paper's existence.

[76] In a written statement released that evening, Lindner again denied any knowledge of the paper and stated he would not have approved of it, and that it was only circulated among internal party staffers and not any elected officials.

[77] Marco Buschmann, who served as justice minister until the traffic light coalition's collapse, was appointed to succeed Djir-Sarai as general secretary of the FDP on 1 December.

[84] Immediately after the confidence vote's failure, public broadcasters ARD and ZDF announced their plans to hold two debates featuring chancellor candidates from four parties.

This represented a change from the 2021 campaign, when ARD and ZDF held a three-way debate between the Union, SPD and Green chancellor candidates.

Weidel's spokesperson demanded her inclusion in a three-way debate based on the AfD's second place in opinion polls, and said the party was reviewing legal action against the broadcasters.

[85][86][87] On 18 December, Table.Media reported that Scholz had agreed to participate in the ARD–ZDF debate on the condition that he would face off only against Merz, which was accepted by the public broadcasters.

[93] Axel Springer SE media brands Welt and Bild announced a joint debate between Scholz and Merz to be held on 19 February, the last Wednesday before the election.

[94] ProSiebenSat.1 Media were the final major broadcaster to announce a debate or interview program, scheduling what it calls "citizen speed dating" on the night before the election.

[109][110] However, Söder stipulated that he would only support the black-red[111] coalition so long as incumbent SPD chancellor Scholz is not included in the next cabinet.

[112] FDP leader Lindner has indicated his desire to form a government with the CDU/CSU, a frequent coalition throughout modern German history and last represented in the second Merkel cabinet.

FDP Bundestag vice-president Wolfgang Kubicki has voiced support for a black-red-yellow "Germany coalition" including the SPD.

[118] According to the Federal Office for the Protection of the Constitution, foreign powers may attempt to discredit candidates seen as undesirable or raise doubts about the legitimacy of the election.