By Jan Wolfe and Andrea Shalal

WASHINGTON (Reuters) – President Donald Trump on Wednesday asked the U.S. Supreme Court to let him join a lawsuit by Texas seeking to throw out the voting results in four states, litigation that also drew support from 17 other states.

In a separate brief, lawyers for 17 states led by Missouri’s Republican Attorney General Eric Schmitt also urged the nine justices to hear the Texas lawsuit.

Trump on Wednesday vowed to intervene in the lawsuit though he did not provide details on the nature of the intervention including whether it would be by presidential campaign or the U.S. Justice Department.

Writing on Twitter, Trump said, “We will be INTERVENING in the Texas (plus many other states) case. This is the big one. Our Country needs a victory!”

The lawsuit, announced on Tuesday by the attorney general of Texas, Ken Paxton, targeted four states.

In addition to Missouri, the states joining Texas were: Alabama, Arkansas, Florida, Indiana, Kansas, Louisiana, Mississippi, Montana, Nebraska, North Dakota, Oklahoma, South Carolina, South Dakota, Tennessee, Utah and West Virginia.

The lawsuit was filed directly with the Supreme Court rather than with a lower court, as is permitted for certain litigation between states.

The Texas suit argued that changes made by the four states to voting procedures amid the coronavirus pandemic to expand mail-in voting were unlawful. Texas asked the Supreme Court to immediately block the four states from using the voting results to appoint presidential electors to the Electoral College.

Texas also asked the Supreme Court to delay the Dec. 14 date for Electoral College votes to be formally cast, a date set by law in 1887.

(Reporting by Andrea Shalal and Jan Wolfe; Editing by Tim Ahmann and Will Dunham)