ISIS terrorist group has called for the slaughter of American voters on Election Day and warned Muslims not to participate in the election.

It also said there is no difference between the Republican and Democratic parties in their policies against Islam and Muslims.

The news came a day after U.S. intelligence sources warned that Al-Qaeda may be preparing for terrorist attacks in New York, Texas and Virginia.

Ritz Katz, director of terrorist monitoring group SITE Intelligence Group, said Saturday on Twitter that ISIS special Hayat media doc calls for attacks on voters on Election Day and demands Muslims not participate in the election.

"ISIS remarked that there is no difference between the Republican and Democratic parties in their policies against Islam and Muslims," She twitted.

"May Allah make this year’s U.S. presidential election a dreadful calamity like no other to have struck America throughout its pathetic history," read the seven-page manifesto, entitled The Murtadd Vote.

According to federal and state law enforcement officials, federal authorities are examining information about the potential interest by Al-Qaeda to conduct attacks in the United States on the eve of Tuesday's election.

"The credibility of the threat, which identified New York, Virginia and Texas as locations, has not been established," USA Today quoted one official as saying.

The official went on to say that beyond the general locations, there is no specific information on the potential form or targets of attacks.

The FBI said that the "counterterrorism and homeland security communities remain vigilant and well-postured to defend against attacks here in the United States."