Sen. Michele Reagan will be the Republican nominee for secretary of state after winning her three-way primary.

For a dose of fear and loathing on the campaign trail, check your mailbox.

As early ballots started arriving by mail this week for the primary election, voters’ mailboxes are also filling up with another kind of election material — political attack ads.

The Arizona Free Enterprise Club has never shown much of an interest in who serves as Arizona’s secretary of state. That changed this year. So far, the conservative, free market advocacy group has spent nearly $480,000 in the three-way Republican primary for secretary of state, promoting Rep. Justin Pierce, R-Mesa, and attacking opponents Wil Cardon and Sen. Michele Reagan, R-Scottsdale.

Six of secretary of state candidate Wil Cardon’s seven siblings sued him over his control of family trust funds and his use of their money, including more than $6 million he spent on his failed U.S. Senate campaign in 2012.

One of the three Republicans running for Secretary of State said Tuesday night he’s not convinced that Arizona law should bar anonymous spending on political campaigns.

Sen. Michele Reagan leads secretary of state hopefuls in fundraising through the first five months of 2014 and has the most cash on hand as the Republican primary election campaign begins to heat up.

Compared to the high-profile races for governor and attorney general, the first wide-open secretary of state’s race in 12 years is flying under the radar.

Arizona state Sen. Michele Reagan has filed nominating petitions to run as a Republican in the race for secretary of state.

Wil Cardon leads all candidates in fundraising for the secretary of state’s race, with fellow Republican Michele Reagan trailing not far behind.

Wil Cardon leads all candidates in fundraising for the secretary of state’s race, with fellow Republican Michele Reagan trailing not far behind.