Don't know if this will help, but I would talk about:
1) Power is influential in either maintaining continuity or instigating change - particularly if they have the authority derived from an election skill.
e.g. Gough Whitlam - came after years of Liberal continuity - brought in changes of women's rights and Aboriginal/indigenous rights etc with his new laws and reforms.
e.g. John Howard and George Bush - maintain conservative government, traditions, most particularly that of not allowing homosexual marriage.
2) Power WITHOUT authority can also result in continuity and change:
e.g. Allende/Pinochet in Chile - this is all in the textbook, but it's basically how Allende tried to introduce change; but was overthrown by Pinochet in a coup...leading to continuity being maintained. You should find it in the textbook, but if you don't have it...yeah. I can tell you some more...!
Hope that helps, good luck