Russian opposition politician Lyubov Sobol has announced she has ended her month-long hunger strike over health concerns for an arrested campaign aide who had joined her in striking.

Sobol went on hunger strike last month after Moscow election authorities refused to allow her and other opposition candidates on the ballot for next month’s local legislature vote. That refusal has spurred weeks of mass protests for fair elections, thousands of detentions and a dozen protesters charged with “mass unrest.”