The joke planned by campaigners for Francois Fillon involved fake glasses that mocked his prominent eyebrows.
The Republican candidate was favorite to win the vote before allegations of a financial scandal involving his wife.
The party deputy said a controversial speech was a deliberate "nod" to one given by rival François Fillon.
With two anti-globalization candidates whose policies could break up the EU among the four front-runners, the vote is of major significance to the international political status quo.
The 2017 French presidential election is probably going to be Europe's most important this year.
Polls suggest Macron will win the presidency in the second runoff round.
France's polling commission warns that a Russian news story saying Fillon is in first place is 'non-representative' of the polling reality.
Polls are tightening, with third-place Francois Fillon picking up support and Macron and Le Pen nearly neck and neck.
The former presidential frontrunner is criticized for spinning 'conspiracy theories.'
The National Front leader has made four visits to Russia since 2011.
Macron ranked first ahead of far right leader Marine le Pen.
Moscow has dismissed allegations that François Fillon received $54,000 to introduce a businessman to Putin.
Once a frontrunner for the presidency, Fillon's ratings have tumbled under the impact of a scandal.
Francois Fillon's conservative party apologizes for tweeted image featuring anti-Semitic stereotypes.
Onetime frontrunner has been mired in scandal over allegedly paying his wife for a no-show job.
"I won't give in, I won't surrender, I won't pull out, I'll fight to the end," Fillon said.
Sarkozy could face a one-year prison sentence if convicted.
National Front leader vows to expel illegal migrants, curb immigration, take France out of the euro zone and levy protective tariffs.
A survey found 69 percent of people wanted Fillon to drop his bid.
The probe will look into alleged misuse of public funds by the presidential frontrunner.
Opinion polls now put Macron in third place, behind Marine le Pen and Francois Fillon.
Leading contender Manuel Valls, the former prime minister, is seen as not likely to prevent a runoff between conservative Francois Fillon and far-right Marine Le Pen.