Following the tragic shooting in Parkland, Fla., that left 17 dead and 17 others wounded, some students of Marjory Stoneman Douglas High School – where part of the shooting took place – said they would not rest until they reduced gun violence, essentially making gun control a central issue for Democrats in the upcoming 2018 midterm election.

Nearly two months after the shooting and a month after the massive nationwide March for Our Lives, their strategy doesn't seem to be working.

According to a Gallup poll published on Tuesday, Americans' mention of guns being the most important problem facing the nation fell by over half, dropping from a record high of 13 percent in March to 6 percent in April.

The survey was taken from April 2-11 – almost two months after the tragic shooting in Florida.

Similarly, according to the Tampa Bay Times, youth voter registration among 16-to-25-year-olds was down by 4,500 across six of Florida's seven largest counties compared to this time of the year in 2014.

During the March for Our Lives, David Hogg, the high school student who made a name for himself as an activist with Never Again MSD, vowed that they "will not stop until every man, every woman, every child, and every American can live without fear of gun violence."

For them, the news may come as a bit of a shock. If Democrats retake control of the House and Senate in November, little of it will have to do with their activism and more with "dissatisfaction of government" – which continues to lead the Gallup poll at 23 percent – followed by "immigration-illegal aliens" (11 percent) and "race relations" (7 percent).

With all due respect to the Parkland students who went through unimaginable trauma, gun control is not a winning issue for Democrats. Whatever Hogg and company have done, whether it be leading a boycott of news personalities who criticize them (i.e. Laura Ingraham) or top investment firms, it's not translating into anything that would actually move the needle in their direction.

Rather than focus on improving school safety – which, by and large, are soft targets – or addressing how law enforcement handles red flag warnings, the Parkland students' obsession with gun control as the one and only answer, in particular, appears to be their undoing.