Democrats have spent more than Republicans on Obamacare ads this cycle, a major shift from every other election since the health care law passed.

Since President Barack Obama signed the Affordable Care Act in 2010, Republicans have made repealing the law their mantra. Theyve fired up their base and put Democrats on the defensive by promising that once they had power, they would repeal and replace.

Republicans got their wish. In 2016, voters gave them control of the White House and both chambers of Congress. Yet their repeal attempts have failed, and the law has grown in popularity .

In response, Republicans are shying away from the law while Democrats are making it a core issue in their 2018 strategy.

Affordable Care Act supporters have spent $13,950,400 on pro-Obamacare ads this cycle (through June 30), just more than the $13,441,570 spent on anti-Obamacare ads.

Its the first time total spending on pro-Obamacare ads has surpassed anti-Obamacare ads in an election cycle. The numbers were compiled by Kantar Media/CMAG for HuffPost.