Campaigns have various phases.
First comes the time when candidates try to intimidate potential opponents.
Next comes the petition passing.
Filing of petitions is only a week long.
And Monday is the end of another week long time when opponents can file objections to petitions that have been filed.
Sometimes the challenge period extends almost to the election, if the issue goes to court.
The final phase, of course, is the campaign itself.
That usually starts after filing, but some candidates, especially those with deep pockets, start far ahead of then.