If it helps anybody, I've collated a list of questions I think are key and tend to come up a reasonable amount. These are for 3C:
Parties:
To what extent are the two major parties ideologically distinct from one another? (45)
Which of the two parties is more ideologically divided? (45)
Explain the main values and policies of the Democratic Party. (15)
Explain the main values and policies of the Republican Party. (15)
Explain the factors that limit the electoral impact of minor parties. (15)
Pressure Groups:
Why has the impact of professional lobbyists on policy-making in the USA been controversial? (15)
How influential are pressure groups in US politics? (45)
‘Pressure groups in the USA promote democracy and widen opportunity.’ Discuss. (45)
How and why do pressure groups attempt to influence the Senate? (15)
How and why do pressure groups attempt to influence the Supreme Court? (15)
Racial & Ethnic Politics:
Why, and to what extent, does the Republican Party oppose affirmative action? (15)
‘Racial equality in the USA remains a distant dream.’ Discuss. (45)
‘Race-based affirmative action has failed.’ Discuss. (45)
Elections & Voting:
Why are US presidential election campaigns so long? (15)
Analyse the strengths and weaknesses of the Electoral College. (15)
Analyse the significance of mid-term elections. (15)
Explain the factors that limit the electoral impact of minor parties. (15)
Which groups of voters tend to support the Democratic Party, and why? (15)
Which groups of voters support the Republican Party, and why? (15)
‘The Electoral College should be replaced by a national popular vote.’ Discuss. (45)
‘The record of the incumbent is decisive in determining the outcome of presidential elections.’ Discuss. (45)
‘The system for nominating presidential candidates is in need of reform.’ Discuss (45)
To what extent do initiatives and propositions promote democracy? (15)
Why has campaign finance reform had such limited success? (15)