Critics of New York's redistricting process are back in court later on Thursday for an appeal to their legal challenge to the lawmaker-drawn district lines in the state Assembly.

The legal bid to the maps comes as voters are set to cast ballots for state Assembly primaries in less than 10 days for early voting. Arguments will be heard in the Appellate Division at 2 p.m.

The plaintiffs in the case -- a bipartisan group that includes a leader of the New York Young Republicans and a Democratic businessman from Greene County in the Hudson Valley -- have argued the Assembly map should be rejected like the district lines for the U.S. House and state Senate.

New York's top court determined the process lawmakers used in drawing those maps was in violation of the state's constitutional amendment creating a redistricting process meant to remove the state Legislature from influencing the lines.

Both of those maps, successfully challenged by Republicans last month in the state courts, were ultimately redrawn by an independent special master selected by a Steuben County judge.

The development has scrambled New York's political calendar as a result: Congressional and state Senate primary elections will now be held on Aug. 23 as candidates file for and run in newly drawn districts that did not exist earlier this year.

The Assembly's maps were preserved because they were not included in the initial lawsuit.

The state Board of Elections, as well as New York officials in the state attorney general's office and Legislature, have argued the Assembly lines should be upheld given the late stage of the campaign calendar. At the same time, elections officials have argued a rejection of the Assembly map would lead to even more expenses for local elections officials.