Meaningless... that is a suit they would not win. It flunks the "Polaroid" test (if you are familiar with TMs).
Lawsuits are filed every day by entities not necessarily intending or expecting to win. It costs money to defend one's self against legal action, and discovery can open your entire private life to the scrutiny of the black hats. And the process takes time - MoveonforAmerica.org could be fighting legalized thuggery for years (and certainly for 60 some odd days, by which time the election will be over).