Prime Minister Shinzo Abe was all smiles Sunday night after being asked to put flower symbols next to the names of his party’s numerous successful candidates, in a post-election appearance at Liberal Democratic Party headquarters in Tokyo on Sunday.

Following the election, Abe’s lifetime ambition now appears to be one step closer to realization. For the first time in postwar history, parties supporting constitutional revision won more than two-thirds of both the Lower and Upper houses.

After leading the LDP to large victories in four national elections in a row, Abe has given his administration a buffer of stability in the wake of Sunday’s victory. The win was also seen as potentially giving momentum to realizing his long-held dream of revising the postwar Constitution, experts said.