Advocate staff file photo by BRYAN TUCK -- U.S. Senator Mary Landrieu

U.S. Sen. Mary Landrieu is facing her runoff fight virtually alone — at least on the television airwaves, according to a new analysis from the Center for Public Integrity.

CPI has been tracking political TV ads throughout the election cycle. Just days ahead of Saturday’s runoff between Landrieu and Republican challenger U.S. Rep. Bill Cassidy, CPI found pro-Landrieu groups have aired fewer than 100 TV ads since the Nov. 4 primary — with most of those coming from the Humane Society Legislative Fund.

Continue reading at the Capitol News Bureau’s politics blog.