fix typo with party

app.py

@@ -72,9 +72,10 @@ if 'p' not in st.query_params:
     st.query_params['p'] = st.radio("Select a condition for the conversation",
                 ['1', '2', '3', '4'],
                 help="1 = base, 2 = bridging, 3 = personalization, 4 = bridging + personalization")
+
 if 'id' not in st.query_params:
     st.query_params['id'] = st.session_state.random_pid
-if 'party' not in st.query_params:
+if 'party' not in st.query_params or st.query_params['party'] == '':
     st.session_state.party = st.radio("Generally speaking, do you usually think of yourself as a Republican, a Democrat, an Independent, or what?", 
                 ['','Republican', 'Democrat', 'Independent', 'Other'])
     st.query_params['party'] = st.session_state.party