Table:
text: 8th New Zealand Parliament
Changes during term
Changes during term
By_election Electorate Date_ Incumbent Reason Winner
1882 Franklin North 9 June Benjamin Harris Election declared void Benjamin Harris
1882 Wakanui 16 June Cathcart Wason Election declared void Joseph Ivess
1882 Stanmore 11 July Walter Pilliet Election declared void Walter Pilliet
1883 Peninsula 22 January James Seaton Death William Larnach
1883 Selwyn 6 April John Hall Resignation Edward James Lee
1883 Inangahua 14 May Thomas Shailer Weston Resignation Edward Shaw
1883 Bruce 29 June James Rutherford Death James McDonald
1884 Selwyn 15 February Edward James Lee Death Edward Wakefield
1884 Thorndon 13 May William Levin Resignation Alfred Newman
1884 Kaiapoi 16 May Isaac Wilson Resignation Edward Richardson

Question: If James Rutherford is the incumbent of New Zealand's 8th Parliament, how many appointments are there?

Question: If Edward Shaw is the victor of the 8th New Zealand Parliament when is the date?

Question: If James Seaton is the incumbent, what is the rationale for the 8th New Zealand Parliament?