Shinjuku, Tokyo held a local election for the city assembly on April 22, 2007 as part of the 2007 Japanese unified local elections.
|- ! style="background-color:#E9E9E9;text-align:left;" |Parties ! style="background-color:#E9E9E9;text-align:right;" |Votes ! style="background-color:#E9E9E9;text-align:right;" |% ! style="background-color:#E9E9E9;text-align:right;" |Seats |- | style="text-align:left;" |Liberal Democratic Party (èªç±æ°Â主å Â, Jiyà « Minshutà Â) | style="text-align:right;" | 23,018 | style="text-align:right;" | | style="text-align:right;" | 10 |- | style="text-align:left;" |New Komeito Party (å ¬æÂÂå Â, Kà Âmeità Â) | style="text-align:right;" | 19,806 | style="text-align:right;" | | style="text-align:right;" | 9 |- | style="text-align:left;" |Japanese Communist Party (æÂ¥æÂ¬å ±ç£å Â, Nihon Kyà Âsan-tà Â) | style="text-align:right;" | 15,642 | style="text-align:right;" | | style="text-align:right;" | 8 |- | style="text-align:left;" |Democratic Party of Japan (æ°Â主å Â, Minshutà Â) | style="text-align:right;" | 10,990 | style="text-align:right;" | | style="text-align:right;" | 5 |- | style="text-align:left;" |New Socialist Party (æÂ°ç¤¾ä¼Âå Â, Shin-Shakaità Â) | style="text-align:right;" | 2,358 | style="text-align:right;" | | style="text-align:right;" | 1 |- | style="text-align:left;" |Social Democratic Party (社æ°Âå  Shamin-tà Â) | style="text-align:right;" | 2,108 | style="text-align:right;" | | style="text-align:right;" | 1 |- | style="text-align:left;" | Independents | style="text-align:right;" | 8,216 | style="text-align:right;" | | style="text-align:right;" | 4 |- |style="text-align:left;background-color:#E9E9E9"|Total (turnout 40.15%) |width="75" style="text-align:right;background-color:#E9E9E9"| N/A |width="30" style="text-align:right;background-color:#E9E9E9"| 100.00 |width="30" style="text-align:right;background-color:#E9E9E9"| 38 |- | style="text-align:left;" colspan=4 |Source: