WASHINGTON (NewsNation Now) — President Donald Trump’s campaign has already called for a recount in Wisconsin, but several closely contested states in the presidential election may re-tally their votes if totals fall within a certain margin.

Here are key rules that determine how seven battleground states handle recounts:

ARIZONA

Automatic recount: Yes

Recount law: A recount is triggered when the margin of victory between two candidates is less than or equal to 0.1 percentage points.

Deadline: There is no set deadline for completion of a recount.

Who pays: Depending on the race, automatic recounts are paid for by the state, county or town.

GEORGIA

Automatic recount: No

Recount law: A candidate can request a recount if the margin of victory is less than or equal to 0.5 percentage point.

Deadline: A recount must be requested within two business days after results have been certified. There’s no set deadline on when a recount must be completed.

Who pays: State law does not specify who is responsible for recount costs.

MICHIGAN

Automatic recount: Yes

Recount law: A recount is required if the margin of victory is less than or equal to 2,000 votes.

Deadline: Request for a recount should be made within 48 hours of the vote canvass. There’s no set deadline on when the recount must be completed.

Who pays: The candidate requesting the recount.

NEVADA

Automatic recount: No

Recount law: A candidate who has been defeated can request a recount, regardless of the margin of victory.

Deadline: A recount must be requested within three business days after the state’s vote canvass. A recount must be completed within 10 days of request.

Who pays: The candidate asking for the recount.

NORTH CAROLINA

Automatic recount: Yes

Recount law: A recount can be initiated if the margin of victory is less than or equal to 1 percent point.

Deadline: For offices governed by the state board of election, the deadline to request a recount is 12 p.m. on the second business day after the vote canvass. For offices governed by a county board of elections, the deadline is 5 p.m. on the first business day after the canvass. Recounts must be completed as soon as possible after the vote canvass, or a completion deadline can be set by the state Board of Elections’ executive director.

Who pays: State law does not specify who pays.

PENNSYLVANIA

Automatic recount: Yes

Recount law: A recount is automatic if the margin of victory is less than or equal to 0.5 percentage point. Two other avenues for requesting recounts include requiring at least three voter signatures that attest to an error in the vote tally, and going to state court to file petitions alleging fraud and error.

Deadline: By 5 p.m. on the second Thursday following the election, for automatic recounts. If a recount is requested, the deadline is five days after the election. An automatic recount must be completed three weeks after the election, and a requested recount doesn’t have a set completion deadline.

Who pays: The candidate requesting the recount.

WISCONSIN

Automatic recount: No

Recount law: A full or partial recount can be requested if the margin of victory is less than or equal to 1 percentage point.

Deadline: For presidential elections, the request must be made by 5 p.m. on the first business day after the state’s vote canvass. The recount must be completed within 13 days of ordering it.

Who pays: The candidate requesting the recount, if the margin is more than 0.25 percentage point of the total vote.