Petition to the Senate.

[AustralianSwingVoter]

1. Is this even legal?
2. Just give up already.

[AustralianSwingVoter]

Honorable sir, are you a senator?

I am your Member of Parliament and I feel compelled to make my voice heard regardless.

[AustralianSwingVoter]

I am your Member of Parliament and I feel compelled to make my voice heard regardless.

Then lets hear what the Senate has to say about this. The voting laws have rules regarding changed votes. If a vote is changed late then the vote is invalidated. If it is changed within a certain period then the vote counts.

There's already a law on the books which you could actually use instead of calling for new legislation that's never going to happen.
Both Houses of Congress can, with a 2/3rds majority, override the region lock. That's your only option.

3. Persons may only change their State of registration from one region to another region once every 180 days. Changes in State of registration may only occur within a single region every 72 hours.
4. Upon voluntary deregistration, a person may not be allowed to register again until 168 hours have passed and, unless they were resident in their region of residence and/or deregistered for the previous 180 days  may not register in another region.
5. Congress, by a 2/3rds vote in each chamber, may unilaterally suspend Section 14 clause 3 in times of an emergency.

[AustralianSwingVoter]

Indeed, and I might introduce legislation to that effect shortly. But even if I (or someone else) did and got passed, it wouldn't apply retroactively.

First it needs to be determined whether there isn't already a cool off period.

There isn't.

[AustralianSwingVoter]

I will wait for the actual Senators to cite the existing laws.

Already have. Federal Electoral Act (F.L. 1-9), after the passage of the regional deregistration loophole amendment (F.L. 17-1), Section 14:

3. Persons may only change their State of registration from one region to another region once every 180 days. Changes in State of registration may only occur within a single region every 72 hours.
4. Upon voluntary deregistration, a person may not be allowed to register again until 168 hours have passed and, unless they were resident in their region of residence and/or deregistered for the previous 180 days  may not register in another region.
5. Congress, by a 2/3rds vote in each chamber, may unilaterally suspend Section 14 clause 3 in times of an emergency.