People Before Profit is calling for the TV licence to be scrapped.
The number of licences paid in the first week of August was 9,361.
That's down from 15,030 in the same week last year, according to figures from the Department of Media.
This means almost four in ten people are now not paying their annual subscription.
Deputy Paul Murphy explains why he thinks the 160 euro annual fee should be done away with:
"We think it is beyond time to scrap the Licence Fee. The Licence Fee is a regressive tax. It's a tax that's the same level on every household, who was eligible to pay, regardless of income. In many ways, it's a similar level to what the water charges were set at. And so we think the Licence Fee should go, and then we need to properly fund Public Service Broadcast including RTÉ through a tax on the big tech companies".
