日本在野两党联手会否把高市政权“逼入困境”？

Group 1 - The core viewpoint of the article is the formation of a new political party called "Center Reform Union" by Japan's largest opposition party, the Constitutional Democratic Party, and the Komeito party, in response to Prime Minister Sanna Takashi's sudden intention to dissolve the House of Representatives and call for early elections [1][3][6] - The new party aims to consolidate "centrist" forces in the face of Japan's political rightward shift, with both parties believing it is crucial to unite under a centrist banner [3][7] - The Constitutional Democratic Party and Komeito currently hold 148 and 24 seats respectively in the 465-seat House of Representatives, while the ruling parties, the Liberal Democratic Party and the Japan Innovation Party, hold 199 and 34 seats [3][4] Group 2 - Komeito candidates will not participate in single-member districts but will run as proportional representation candidates, indicating a full support for candidates from the Constitutional Democratic Party in key districts [4][6] - The formation of the new party appears rushed, as reports suggest that only members of the House of Representatives will join the new party, while senators and local assembly members will remain with their original parties [6][7] - There are existing policy differences between the two parties on key issues such as security laws and nuclear power, which may complicate the integration of their policies within the new party [7][9]