U.S. Sen. Rand Paul of Kentucky is endorsing fellow Republican Mark Sanford’s bid for the South Carolina’s First Congressional District seat.

The special election is next week and features Sanford, a former governor, in a tight contest against Democrat Elizabeth Colbert Busch, a political newcomer who is the sister of comedian Stephen Colbert.

Sanford gained national notoriety for having a extra-marital affair while in office, and it was recently reported he was accused of trespassing on his ex-wife’s property.

Despite those controversies Paul says Congress needs strong and consistent voices that will support fiscal responsibility, adding Sanford has a history of sticking up for the taxpayer.

“What we absolutely cannot afford is someone like his opponent, who will be yet another vote for a return to the Pelosi speakership, for disastrous programs like Obamacare, and for more spending and debt,” says Paul.

In a separate statement, Sanford praised Paul, a potential 2016 presidential contender, as an “incredible advocate” for fiscal responsibility.

Paul’s support comes a day after those personal indiscretions were brought up during a debate between Sanford and Colbert Busch.

Political observers say the debate favored Colbert Busch.