Ohio Rev. Code Ann. § 2106.05

If a surviving spouse elects to take under the will, the surviving spouse shall be barred of all right to an intestate share of the property passing under the will and shall take under the will alone, unless it plainly appears from the will that the provision for the surviving spouse was intended to be in addition to an intestate share. An election to take under the will does not bar the right of the surviving spouse to an intestate share of that portion of the estate as to which the decedent dies intestate. Unless the will expressly otherwise directs, an election to take under the will does not bar the right of the surviving spouse to remain in the mansion house, and does not bar the right of the surviving spouse to receive the allowance for the support provided by section 2106.13 of the Revised Code.