The wheels of the voting system were at work Tuesday as 191,000 vote-by-mail ballots were prepared to be sent to voters. 

“This is a big day. We’ve got a huge truck out there taking a lot of mail to the post office,” said Hillsborough County Supervisor of Elections Craig Latimer.

It’s a big day and a big deal in an era where questions swirl around the voting system.

President Donald J. Trump tweeted: “I’m very concerned that Russia will be fighting very hard to have an impact on the upcoming election.”

“I think we’re doing everything we can to make sure we have systems in place, security in place, to put us at a minimal risk,” Latimer said.

He downplayed any talk of tampering in Hillsborough County because the system here is independent from all others nationwide.

“There’s over 8,000 jurisdictions that run elections and none of them are connected,” he said.

In the Hillsborough elections office, the tabulation system isn’t connected to the registration system so tampering is virtually impossible, Latimer said.

In 2016, the office received an email from a potential hacker, but it was quarantined.

“So your system stopped that email?” reporter Ryan Hughes asked.

“Yes, it did,” Latimer said.

Still, voters worry.

“Well, when it’s going out in the mail there’s a point when it’s not controlled by anybody and it can be adjusted or altered,” voter Danielle Shemelia said.