DAYTONA BEACH, Fla. (AP) — Republican Mitt Romney is accusing President Barack Obama of engaging in ‘‘petty attacks and silly word games’’ just 18 days before the election.

Romney on Friday rallied a raucous crowd in Daytona Beach, Fla., saying Obama was running a small campaign.

Earlier in the day, Obama joked that a case of ‘‘Romnesia’’ was preventing Romney from remembering his own policy positions.

The Republican also accused Obama of having no second-term agenda. He dubbed Obama’s bid, quote, ‘‘the incredible shrinking campaign.’’

Romney campaigned with running mate Paul Ryan. A colorful crowd of thousands greeted them — Daytona Beach is hosting its annual Biketoberfest, drawing motorcycle riders from across the country.