Notwithstanding any law to the contrary, if a municipality is located within two (2) or more counties of the state, then the county election commissions of each respective county may, by written mutual agreement of the counties, designate one (1) satellite location for early voting outside the boundaries of one (1) of the respective counties; provided, that the location for early voting is within the limits of the municipality and within five hundred feet (500') of the county boundary line.