Former Rep. J.D. Hayworth (R-Ariz.) is considering a run for Sen. Jon Kyl's (R-Ariz.) seat after getting calls from Tea Party activists encouraging him to enter the race.

Hayworth challenged Sen. John McCain (R-Ariz.) in the 2010 GOP primary, but came up well short of unseating the long-serving incumbent.

Kyl announced Thursday he would not seek a fourth Senate term.

"I'm very flattered people are asking me to run," Hayworth told The Ballot Box. "A lot of people have contacted me about it, a lot of grass-roots conservatives, many of whom are part of the Tea Party.

"I'm honored they have reacted so quickly," he added. "It's something we'll take a look at in the days ahead."

Hayworth sought to harness the energy of the Tea Party movement in his challenge to McCain. While he earned the support of some groups, that didn't translate into the kind of financial backing necessary to compete against the incumbent.

Hayworth said he will be talking with activists over the next few days to gauge their level of interest.

"A lot goes into these decisions," he said. "First and foremost, we're going to sit down as a family."

Hayworth said he's been doing consulting work, making radio appearances and giving speeches since losing to McCain in the Senate primary last August. He finished that race with almost $150,000 in his campaign account, according to his final Federal Election Commission report.