Released in July of 1964, "Maybe I Know" was Lesley Gore's seventh Top 40 smash in a row. In a ten-week stint on the Billboard Hot 100, the single peaked in the Top 20 at #14. However, on the Cash Box chart, the song did even better, and reached #10, becoming her fifth and final single to reach the Top 10 on that chart. "Maybe I Know" also reached #16 in Canada, #20 in the United Kingdom, and #37 in Australia. The song is regarded by many to be her best song.