Overall spending on TV ads in state supreme court races stands at $12.1 million for the year, a $3 million increase over the past week, according to a new report.

Outside groups roughly doubled their ad spending in the past week, with roughly $1 million flowing into Illinois, Michigan, Montana, North Carolina and Ohio, bringing their total yearly spend to nearly $2.1 million. Those findings are from a new report from the Brennan Center for Justice and Justice at Stake, both advocates for the integrity and independence of the judicial branch. They represent an update on a similar report released last Friday, based off of an analysis of Kantar Media/CMAG ad data.

The estimated $12.1 million spent this year went to buy ads in 10 states. Political parties and outside groups have spent roughly $4.5 million on ads for the general election alone. The remaining amount comes from candidates and their committees.

Academics and advocates warn that outside spending may be distorting judicial rulings. A recent review of roughly 3,000 decisions from  2008 to 2013 found that an increase in the number of TV ads aired during a supreme court election was correlated with an increase in rulings against criminal defendants. Academics suspect that finding is the result of fear from justices that TV ads will use their decision to portray them as “soft on crime.”