do felons usually serve out sentence
State jail felons generally serve every day of their sentence. Time served for misdemeanors in Texas varies by county. In Harris County, misdemeanor defendants usually get two days credit for one day served. In counties with more crowded jails, a defendant may get three days credit for each day served.nce again, eligibility does not mean release. Most prisoners are not released when parole eligible. For other first, second and third degree felonies, the prisoner is parole eligible when calendar time plus good conduct time equals one-fourth of the sentence.