Melissa Block talks to Carrie Johnson about an al-Qaida bomb plot that was thwarted by the CIA.

In Indiana, Republican primary voters on Tuesday decide whether to give GOP Sen. Richard Lugar the chance at a seventh term. Polls show him in trouble, with his Tea Party-backed opponent in the lead. But for some, Lugar's perceived strength in the general election will influence their vote.

The state of Texas has moved to block public funds for Planned Parenthood because the organization refers patients to abortion providers and advocates for abortion rights. Planned Parenthood says the rule violates the nonprofit's constitutional rights to free association and free speech.

On Sunday, Vice President Joe Biden expressed support for same-sex marriage. President Obama has not gone as far, saying his views on the issue are "evolving." On the Republican side, the Romney campaign recently lost a national security spokesman who is an outspoken defender of gay marriage.

It's primary Election Day in Wisconsin on Tuesday, where five Democrats are vying for the opportunity to take on Republican Governor Scott Walker in June. The recall stems from massive protests at the state capitol last winter, and many view the election as a referendum on Walker's bill that strips public unions of collective bargaining rights.

If the latest polls hold, Richard Lugar, R-Ind., may be headed out of the U.S. Senate after Tuesday's primary in Indiana. But don't worry too much about the 80-year-old Lugar. There are plenty of post-politics options for a former lawmaker. Even for an octogenarian.