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When Gabino Cué Monteagudo (PAN) won the elections, Eufrosina was elected to the office of presidenta de la mesa directiva del congreso local (president of the board of the local congress), becoming the first indigenous woman to chair the state Congress of Oaxaca.
He has been Local Congressman in the LVII Legislature of the State Congress of Oaxaca, Mayor of Ixtepec, Oaxaca, General Secretary of the “Confederación Nacional Campesina” (National Rural Confederation) in Oaxaca, President of the PRI in the State of Oaxaca, member of the National Political Council of the PRI and Secretary of Agricultural, Livestock and Forest Development in Oaxaca.