diff --git a/cmd/web/handlers.go b/cmd/web/handlers.go
index 9b9880c..402a470 100644
--- a/cmd/web/handlers.go
+++ b/cmd/web/handlers.go
@@ -101,11 +101,32 @@ func randomVoterIdentity() string {
 	return string(b)
 }
 
-type createVoteRequestWithValidator struct {
+type createVotesRequestWithValidator struct {
 	api.CreateVotesRequest
 	validator.Validator
 }
 
-func (app *application) createVote(w http.ResponseWriter, r *http.Request) {
+func (r *createVotesRequestWithValidator) isValid() bool {
+	r.CheckField(validator.NotBlank(*r.VoterIdentity), "voterIdentity", "must not be blank")
+	r.CheckField(validator.GreaterThan(*r.ElectionId, 0), "electionId", "must be greater than 0")
 
+	for _, choice := range *r.Choices {
+		r.CheckField(validator.NotBlank(*choice.ChoiceText), "choiceText", "must not be blank")
+	}
+
+	return r.Valid()
+}
+
+func (app *application) createVote(w http.ResponseWriter, r *http.Request) {
+	var request createVotesRequestWithValidator
+
+	if err := app.unmarshalRequest(r, &request); err != nil {
+		app.clientError(w, http.StatusBadRequest, err.Error())
+		return
+	}
+
+	if !request.isValid() {
+		app.unprocessableEntityError(w, request.Validator)
+		return
+	}
 }
diff --git a/cmd/web/openapi.yml b/cmd/web/openapi.yml
index 0225430..c294c3d 100644
--- a/cmd/web/openapi.yml
+++ b/cmd/web/openapi.yml
@@ -236,7 +236,6 @@ components:
                 minLength: 1
               tokens:
                 type: integer
-                minimum: 1
 
     ErrorResponse:
       type: object