WASHINGTON (AP) _ Voting rights advocates say persistent reports of robocalls incorrectly telling voters they can cast ballots over the phone and fears of aggressive challenges by monitors at polling places threaten to mar Election Day in many key states.

     Advocates say the fake phone calls continued to crop up in Virginia, North Carolina and Florida, primarily among African-American voters. Voting rights groups are making calls reminding voters they can’t cast ballots over the phone.

     The last-minute telephone tactics are only the latest in months of legal and political battles over more restrictive voter ID and other laws.

     Many of these issues could resurface in the courts after Tuesday, particularly if the presidential race is too close to call or heads for a recount in states such as Ohio or Florida.