Among companies with PACs, the 23 that received $1 billion or more in federal money through the Troubled Assets Relief Program gave a total of $1.4 million to candidates in September, up from $466,000 the month before.

Most of those donations are going to Republican candidates, although the TARP program was approved primarily with Democratic support. President Obama expanded it to cover GM and other automakers…

Scott Talbott, a lobbyist with the Financial Services Roundtable, said another factor could be the tone some Democrats used against financial firms. At one point, Obama called Wall Street executives “fat cats.”

“The entire industry was painted with a broad brush, and there was dissatisfaction with that,” Talbott said.