The vote will decide all 465 seats in parliament’s lower house and mark Takaichi’s first electoral test since becoming nation’s first female leader.
By Al Jazeera Staff and News Agencies
Japan’s Prime Minister Sanae Takaichi has said she will dissolve parliament on Friday and call a general election to seek voter backing for her spending plans and other policies.
The snap election announcement on Monday comes just three months into her tenure as the nation’s first female prime minister. ……


You just got elected, dummy.
And this shit almost never works the way they want.
Every Japanese Prime Minister get a surge in popularity every though they are from the same party of the last PM who resigned due to low poll numbers.
I think she is trying to use her current popularity to gain more seats in the parliament, I am not sure whether that will work out but she probably did the math.