The U.S. Supreme Court releases advance information to the public about which cases it has on conference, for any particular conference date. The purpose of the conference is to decide whether to hear various cases. There are now three election law cases which have been through at least one conference, but the Court has neither accepted them nor rejected them, nor even set a new conference date for them.
The case over the special U.S. Senate election in Illinois has been through three conferences, the last of which was March 4. There is still no action by the Court on this case (which is really two cases, Burris v Judge and Quinn v Judge), and the Court hasn’t even set a new conference date.
The case over Dallas vote-counting machines and the Voting Rights Act had a conference on March 18, with no result and no new conference date announced.
Most recently, the Green Party of Connecticut case over discriminatory public funding had a conference on March 25, with no result and no new conference date. Of the three cases, the Connecticut case absense of action is the least puzzling. Another case involving public funding (from Arizona) will get a decision on the merits in the next two or three months, so it is plausible that the Court is holding the Connecticut case for further action when the Arizona decision comes down. But it is difficult to understand why the court has put action on the Illinois special election case, and the Texas vote-counting machine case, into the indefinite future.