CHICAGO (AP) — If it seems as though the number of political ads on television has ramped up markedly this election, now there’s concrete proof.

Fueled by a neck-and-neck contest for governor including a wealthy Republican candidate with money to burn, Illinois has seen a roughly 30 percent increase in the number of TV ads and the money spent to air them this election cycle compared to four years ago, according to an analysis by the non-partisan Center for Public Integrity.