The bill faces a final Senate vote today.

Like the four other GOP senators who joined him, the man who won the late Democrat Edward Kennedy's seat says it's about jobs, not party politics. And that may be good politics, too.

The four other GOP senators who broke ranks - Olympia Snowe and Susan Collins of Maine, George Voinovich of Ohio and Christopher "Kit" Bond of Missouri - also were criticized Tuesday.

But Brown was the big target on conservative Web sites, talk shows and the Facebook page his campaign has promoted as an example of his new-media savvy.

"We campaigned for you. We donated to your campaign. And you turned on us like every other RINO," said one writer, using the initials for "Republican-In-Name-Only."

The conservative-tilting Drudge Report colored a photo of Brown on its home page in scarlet. The new senator responded by calling into a Boston radio station.