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ABC News' Michael Falcone reports:

A pro-Democratic super PAC unveiled an online campaign on Tuesday that aims to draw attention to what the group says is Senate Minority Leader Mitch McConnell's "record of putting Washington's interests above Kentucky's."

The Senate Majority PAC has created a microsite, "Beltway Mitch," that calls the Kentucky senator, who is up for re-election in 2014, "Washington's top road block" and accuses him of being "deep in hock to extreme special interests."

"As a top Washington insider, Mitch McConnell has left Kentuckians' interest behind and voters need to know his true record," Rebecca Lambe, co-chair of the Senate Majority PAC said in a statement. "By acting as a roadblock for job creation, investment in education, and giving law enforcement the tools they need, McConnell has proven he has forgotten the people of the Commonwealth."

In addition to the website, officials with the group said its anti-McConnell push would also include paid content on social media sites such as Facebook and Twitter.

So far, no top Kentucky Democrats have launched a bid to challenge McConnell, leaving it to organizations like the Senate Majority PAC and the Democratic Senatorial Campaign Committee to start chipping away at McConnell's record as they try to damage his hopes of winning a sixth term.

Last month, one day after actress Ashley Judd announced her intention not to run against McConnell, the DSCC began running radio ads against him.

Since Judd made her decision public on March 27, speculation has focused on Kentucky Secretary of State Allison Lundergan Grimes as a viable opponent to McConnell. But as recently as this weekend, Grimes said she was undecided.

"I don't know what the next step is for me," Grimes told a crowd at a Democratic fundraising dinner in Bardstown, Ky.

According to a local news report, Grimes did not mention McConnell by name in her remarks, but did fit in a few thinly-veiled digs.

"It makes a difference as to who you send, for instance, if you send someone to Frankfort or to D.C. that votes against the Violence Against Women Act," she said.

McConnell opposed the Violence Against Women Act, a vote that the Senate Majority PAC highlighted on its "Beltway Mitch" site.