Although Polk County Republican Rep. Dennis Ross easily won Florida’s 15th Congressional District each of the four times he’s been on the ballot since 2010, Democrats seem particularly energized in challenging him when he runs for re-election next year.

As previously reported by FloridaPolitics.com, no fewer than five Democrats have already filed to run in a primary next year, with the winner getting the opportunity to take on Ross in November of 2018.

Indivisible East Hillsborough County is an activist group formed after last year’s presidential election. Frustrated by what they say is Ross’ inattention to that part of the district (which also includes Polk and Lake counties), the group placed a billboard in Brandon on State Road 60 across from the Westfield Mall, criticizing him for his lack of attention with the statement, “Congressman Ross, stop PUTIN us off!'”

“Republican Dennis A. Ross, has refused to hold a public town hall since the first congressional recess, especially following his crucial vote in favor of the AHCA, which critics argue could cause millions to lose their health coverage,” read a statement sent out by the group. “In addition, many feel that Ross, known for his support of President Trump, has not adequately addressed his constituents concerns over the growing scandal involving Trump and Russia.”

The group says that it has extended invitations to all candidates who plan to run for the CD 15 seat in 2018, regardless of party affiliation, including Ross, on to a forum this Monday, June 5 at 6:30 p.m. at the Lakeland Public Library.

However, they don’t want the candidates to speak at the event. Instead, they say the goal is for “constituents to voice their concerns and talk to the candidates about the issues that matter most to them and to the future of their district.”

A second billboard is now up in Lakeland, located a block from his office at South Florida Avenue and Schoolhouse Road.

A spokesperson for Ross declined to comment.