It’s recount season in Md. Here’s where they’re happening and how they work.

Three weeks after Maryland’s primary elections, officials in three counties are preparing for recounts in unresolved contests. There are too-close-to-call races in Montgomery, Prince George’s and Frederick counties. The search for the trained personnel needed for potentially time-consuming recounts is on, an elections official said. And the longer races remain up in the air, the tougher it will be for elections boards to meet critical deadlines for the general election in November.