A federal judge refused to block a legal challenge against Proposition 8, which bans same-sex marriage in California. Both sides expect the case to go to the US Supreme Court.
Three Supreme Court justices have already announced their willingness to overturn a pair of key precedents.
There will be two new faces – and one familiar face in a different role.
At stake in a case it will re-hear Wednesday is whether corporations and unions should enjoy the same rights to political speech as individuals.
Legal challenges ensue in federal court, and plans are afoot for a 2010 ballot measure to undo Proposition 8.
A West Virginia case before the US Supreme Court could clarify when judges must recuse themselves.
The case, to be heard Monday, will determine if the smokers' suit alleging fraudulent ads about 'low tar' cigarettes can go to trial.