While I was auditing some accounts of twitter I saw some guys are with low audit score on your campaign and thought I should help you a bit. They might not be at fault as there are times when followers get inactive and or they stop following.
Basically they are getting a place in your campaign based on their first ever audit, while that happened like years ago. I was re-auditing them for my campaign and found they have low percentages.
Here are some of them I found having low percentages maybe not their fault: arwin : 26% -
https://www.twitteraudit.com/SenyoritoBrandowill update this list very soon.