Republican presidential hopeful Mitt Romney’s campaign is one of the first to sign up for Twitter’s newly launched political advertisement service, Romney’s campaign confirmed Wednesday.

“Twitter is a leading platform for real-time engagement and @MittRomney is constantly looking for ways to share his vision to turn around the economy,” according to Romney spokeswoman Andrea Saul. According to Saul, the service is a chance to ramp up the campaign's social media engagement, a strategy that has become increasingly important to politicians.

The campaign began promoting a tweet Wednesday morning that links to the campaign’s “Obama isn’t working” website, which includes a countdown clock to November 2012.

Romney tweeted: "We can’t afford 4 more years of failed leadership RT & share if you agree"

Five campaigns have already signed up, including Romney and the Democratic Senatorial Campaign Committee, according to the Washington Post

Twitter plans to differentiate between business and political “promoted tweets” with an orange and a purple icon, respectively. Candidates will be able to promote Twitter hashtags, campaign accounts, or individual tweets.

Campaigns who advertise on Twitter will also be able to include a full disclaimer complaint with the Federal Election Commission as a hover menu on their promoted tweets.