No vote date has been published, so there is no fixed deadline. The group says the bill is under attack in Congress now, so calls can be made now.
The strategy
Calls urging a no vote can affect how a representative votes, and a steady flow of calls is what offices track. One call adds a small amount.
Why it scored 67
Scale: Huge
Guess: the bill would affect a large number of listed species across the U.S.; the group gives no animal count, and individual animals could plausibly total in the millions, but this is an estimate.
Severity: Serious
Serious harm: the group says the bill would make recovery harder for vulnerable species, which is a meaningful harm, according to the group's view.
Chance of success: Plausible
Plausible: the bill's progress and the leaning of members are not confirmed, so the outcome could go either way.
Your difference: Moderate
Moderate: a constituent call to a representative is one contribution among many.