Trent Lott — who was a founder of the Breaux-Lott Leadership Group, a lobbying firm that has now partnered with K Street giant Patton Boggs — is appearing in a campaign ad for Sen. Thad Cochran, R-Miss.

Lott's lobbying clients include SpaceX, AT&T, Citigroup, Exxon, FedEx, General Electric, Goldman Sachs, Lockheed Martin, the National Association of Broadcasters, Nissan, Prudential, Raytheon, Shell, Amazon, and more.

My colleague David Drucker reported on Monday:

Republican sources say the GOP former senator is anxious to help Cochran, who ran against him for Senate Majority Leader in the 1990s. Longtime Mississippi Republicans say Lott is considered a political “favorite son” of Jackson County, where he lived all of his adult life until 2005, when his house was destroyed by Hurricane Katrina.

Now a resident of Jackson, Mississippi’s capital, Lott still carries considerable weight in Jackson County and throughout the state, and Republicans believe he could be particularly helpful to Cochran in the coastal region. Lott recorded a radio advertisement in support of Cochran before the primary, and Stevens said he has agreed to film a television spot for the senator in the runoff. Lott could not be reached for comment late last week.