Wonder will headline a fundraiser for Landrieu as she seeks to move past Keystone vote.
"My success in this position is because of their dedication to this office," said Rep. John Barrow (D-Ga.).
The governor says he won't run for the White House unless he feels "called to do it."
Republicans hope Gov. Brian Sandoval challenges the soon-to-be Senate minority leader.
A big choice is looming for nearly a half-dozen potential presidential candidates.
But the Louisiana Democrat argued the bill's failure won't undermine her reelection efforts.
GOP digital guru Vincent Harris joins for Paul's reelection and possible White House bid.
Ready for Warren announced a Feb. 16 deadline and a new effort to woo her for 2016.
Some proceeds from the Dec. 1 event will go to Cassidy ahead of his runoff election.
Pence said that for now he is "taking steps" to run again for governor.