The ratings figures from Nielsen TAM figures for Tuesday back up indications it is not reaching the younger viewers it is targeting with its focus on social media.
Campbell Live last night had 352,600 viewers compared to 296,700 for Seven Sharp.
It is the smallest audience for Seven Sharp since it began on February 4. In the demographic for people aged 25-54 - the target demographic for TV3 and TV One - Campbell Live had 127,600 viewers compared to 99,100 for Seven Sharp.
In the 18-39 age group Campbell Live had 55,500 compared to 40,800 for Seven Sharp according to the rating figures.
The TVNZ head of news and current affairs Ross Dagan, who was the architect for the show, has said it is too early to judge ratings for Seven Sharp.
In a statement posted on Throng.co.nz, TV3 director of news and current affairs Mark Jennings said "once over lightly" was not their style.
"For us, in-depth daily coverage of the stories and issues that matter to Kiwis is central to the future of current affairs. Viewers are clearly telling us this is what they want; substance and not once over lightly."