Ohio election officials say they have “grave concerns” about being able to carry out a successful primary election on May 3, citing the already tight timeline due to still-unresolved state legislative maps as the battle over redistricting continues.

In a letter, leaders of the Ohio Association of Election Officials strongly urged Republican Senate President Matt Huffman to delay the primary.

They said many of Ohio’s 88 counties “no longer have the ability to run a successful” primary, “and more counties lose that ability each day.”

Republican Secretary of State Frank LaRose on saturday ordered county boards to begin adding legislative candidates’ names to ballots, as instructed by the legislature.