State election officials plan to spend about two thirds of election security money allocated by Congress earlier this year on new voting equipment and cybersecurity efforts, though not all the improvements will be completed before the November elections.

New data gathered by the federal agency that distributes the funds detail how states plan to spend $380 million appropriated by Congress in March to upgrade election security. States plan to spend roughly $134.2 million on cybersecurity upgrades over five years, and $102.6...