BOSTON (AP) – Libertarian vice presidential nominee William Weld says he’s seen interest and fundraising pick up recently as GOP presidential nominee Donald Trump’s campaign has struggled.

Weld said Monday he’s spoken with a handful of Republican members of Congress who are considering reassessing their endorsements for the fall.

Weld is running with Libertarian Party presidential nominee and former New Mexico governor Gary Johnson. Weld made his comments as he delivered a final batch of signatures to guarantee the two former Republicans a spot on the November ballot in Massachusetts.

Weld said momentum is growing for the Libertarian ticket.

The former Massachusetts governor said the immediate goal is to reach the 15 percent threshold needed in polls to secure a spot on the debate stage with Trump and Democratic presidential nominee Hillary Clinton.