Simply told his staffer to leave a message, "Vote to impeach or we are going to vote you out next fall. How many crimes does Trump have to commit before Congressman Mast does his job?, I will vote Democrat in the fall, and they will do it instead, your choice", or something to that effect. I left my name and phone number, I am a registered independent in Florida. He did get my vote 6 years ago. This took 1 minute of my day.
I suggest non-maga and liberals do the same, even if you have a Democrat in office, cause most of them are not really helping either. I If our GOP congressmen and women get a few thousand calls like this a day, it will move the needle. The last thing they want is David Hogg and AOC gaining more traction, that scares the bajezeezes out of their dominator class, who I imagine feels the same way I/ we do. This country needs to grow a set of balls, and instead of clamoring in the streets, just bombard your local representative with calls; it takes far less time and effort.