(CNN) - Is Rob Simmons jumping back into the GOP Senate nomination battle in Connecticut?
It sure looks like it.
The former three-term Republican congressman announced Wednesday he'll run a television commercial asking Connecticut voters to look at the issues when making their decision in the state's August 10 primary.
Former professional wrestling executive Linda McMahon captured the Senate nomination endorsement of Connecticut Republican delegates at the state's GOP convention in May, with Simmons finishing second in the voting and businessman Peter Schiff in third. Soon after the vote, Simmons suspended his campaign and released most of his staff, but he did remain on the primary ballot, which he reminds voters of in his new ad.
"In the Republican primary on August tenth, you do have a choice. I'm Rob Simmons, I'm still on the ballot, and I approved this message."
In a press release, Simmons says the ads are in the nature of a public service announcement. But he also states that "for the past two months, I have been traveling the state supporting my fellow Republican candidates."
"Everywhere I go people ask me if I am still running for the U.S. Senate. My response has been 'I'm still on the ballot'," adds Simmons.
His move follows weeks of speculation that he may re-enter the race, including an interview he gave with the Hartford Courant, where he said "I'm trying to think about what's right, what's honest and what's decent."
The McMahon campaign Wednesday quickly criticized the Simmons announcement on new running new ads.
"For eight months, Rob Simmons promised Connecticut Republicans that he would not primary if he lost the convention. He lost the convention, then immediately announced he would primary. Hours later, he dismissed his staff and announced he wouldn't primary," says McMahon campaign spokesman Ed Patru, in a statement.
"Should he decide to officially un-curtail his campaign, we're prepared for that, as we have been since September 2009. Until that happens, following Rob Simmons' on-again, off-again campaign is a little like trying to keep up with an Abbott and Costello routine… Who's on first?"
The ad by Simmons, who won two bronze stars while serving in the U.S. Army in Vietnam, appears to add intrigue into what was expected to be primary with little excitement. But some in the GOP are not too concerned.
"Republicans took Rob Simmons at his word when he said he wouldn't primary if he lost the convention. So this announcement is odd, but the reality is that his campaign is shut down for all intents and purposes, and everyone is working to make sure Linda McMahon is the next Senator from Connecticut," a Republican source tells CNN.
The primary winner will face off in November against longtime Connecticut Attorney General Richard Blumenthal, the presumptive Democratic nominee. The general election winner will succeed five-term Democratic Sen. Chris Dodd, who announced earlier this year that he would not run for re-election.
Follow Paul Steinhauser on Twitter: @psteinhausercnn