(CNN) — The Supreme Court agreed Monday to decide whether states may count mail-in ballots received after Election Day , taking up a Republican-led lawsuit that could affect election laws in more than a dozen states across the country.

It is the latest of several high-profile voting cases to make it on to the Supreme Court’s docket this year as the justices are asked to deal with controversies dating back over the past several elections.

Fifteen states allow regular mail ballots to be accepted after Election Day, including presidential battleground Nevada . Most of the nation’s battleground states – including Michigan, Pennsylvania and Wisconsin – require ballots to be received by Election Day.

Other states accept military ballots after Election Day.

A Mississippi law, enacted d

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