A Republican looking to unseat U.S.  Rep. Mike Thompson (D-St. Helena) has released a robocall that has to rank as one of the more unusual - and sultry - of the year.

The robocall features a woman's voice speaking in a seductive tone, saying "Mike Thompson's been a bad boy," and then castigating him for voting for the Wall Street bailout package earlier this month as well as the Patriot Act.

The woman than says, "Vote YES for Zane," referring to Zane Starkewolf, Thompson's Republican opponent in the 1st Congressional District. The "YES" is delivered in a decidedly orgasmic manner.

On his campaign Web site, Starkewolf said the robocall was deliberately provocative.

"The message is there -- and what it says is that Mike Thompson went against the people of this district when he voted to pass and have us pay for the $700 billion dollar bailout and went along with George Bush as he has done on various issues including in passing the so called ‘Patriot Act,'" Starkewolf wrote on his site. "This is simply appalling. And if a message needs to go out that is ‘appalling' in a sense in order to get the discussion going, than I believe it is a worthy cause."

Starkewolf is widely considered a longshot candidate to upset Thompson, who has never faced a serious re-election challenge since he was first elected in 1998.