All voters who wish to change their party affiliation in order to vote in the April Presidential Primary Election or the State, Local and Congressional Primary Election to be held in June, must do so by this date.  For forms and additional information, contact your local Board of Elections.   In Dutchess County, go to:  http://www.dutchesselections.com,  and in Ulster County go to: https://elections.ulstercountyny.gov.