According to Texas law, residency involves two key factors: physical presence in the state and a clear intent to remain in Texas. - Written intent to abandon previous domicile and establish it in Texas.- Physical presence of yourself (include duration) and your family here. For legal purposes, where you sleep is only part of the answer to where you live. Short Answer: The definition of residence for the purpose of voter registration is well settled in Texas. Under Texas state law, an applicant or enrolled student is classified either as a resident of Texas, a nonresident or a foreign student.