Witnessing Requirements: No State has witness requirements for the Federal Post Card Application (FPCA). A witness may be required however if a voter receives assistance when completing the form.
No State has notary requirements for either the FWAB or the FPCA.
For the Federal Write-in Absentee Ballot (FWAB) the following States/Territories have witnessing requirements:
Alabama (2 witnesses) Alaska (1 witness) Virginia (1 witness) Wisconsin (1 witness). Any witness must sign in the witness section of the Voter's Declaration Section as instructed on the FWAB.