The pitch touts Republican Steve Lonegan's improvement in a recent poll, as well as negative press Democratic contender Cory Booker has received in recent weeks, including the recent revelation that he exchanged flirtatious messages with a stripper on Twitter.

NRSC press secretary Brook Hougesen likens that last development to former New York Rep. Anthony Weiner (D), who infamously had lewd twitter and text interactions with women who were not his wife. Those interactions, and new reports on their extent, sank his recent New York mayoral bid.

"Newark Mayor Cory Booker is in the lead, but that lead is dropping — indicating momentum is shifting as we get closer to Election Day," the email from Hougesen declares.

"As they learn more about his character, voters are realizing that Cory Booker isn't fit to serve," she adds.

"Booker has been caught lying about a fictional friend named T-Bone and inflating stories about his past. Then, it was revealed that he was tweeting with strippers. The last thing we need in the Senate is another Anthony Weiner."

Earlier this week, reports surfaced that Booker had sent a direct message on Twitter to a Portland stripper named Lynsie Lee, declaring "And the East Coast loves you and by the East Coast, I mean me."

Booker, who is single, later brushed off questions about the interaction, saying he was just returning "kindness" and doesn't pay attention to people's Twitter profiles.

“I’ve tweeted people back from all different backgrounds,” he said. “It’s not something I pay attention to. But when somebody’s kind to me, I often say thank you.”

Booker also came under fire in recent weeks for allegedly fabricating interactions with a Newark character he calls T-Bone, a drug dealer Booker often describes in stump speeches detailing his experiences in Newark.

A National Review report raised questions about the veracity of Booker's stories. Booker has repeatedly insisted T-Bone is a real person, but Republicans argue that the investigation, and Booker's inability to produce clear proof, are evidence that he is untrustworthy.

He recently suffered a significant drop in the polls, posting just a 12-point lead over Lonegan in a recent Quinnipiac University survey that seemed to indicate the race tightening from weeks prior, when he consistently led by more than 20 percent.

It's unclear whether the Quinnipiac poll is evidence of a tightening race, as it's thus far the first and only to show Booker's lead shrinking.

And he remains the heavy favorite in deep-blue New Jersey, with just over two weeks left until Election Day.