U.S. Senate candidate and Indiana State Treasurer Richard Mourdock got choked up on Sunday while speaking at a Republican party event.

"Honestly, as I look at our nation's capital, I feel more frustrated with Republicans than Democrats," Mourdock, his voice cracking, said at the state GOP's annual Lincoln Day Dinner, according to the Tribune.

He continued by decrying bipartisanship, which he said had led the nation toward bankruptcy. "It is not bipartisanship we need, it is principle," he said.

Mourdock, a member of the Tea Party, is challenging incumbent Sen. Richard Lugar in Tuesday's Indiana Republican primary. The campaign between the two has been hotly contested, attracting the highest outside spending of any congressional race. A poll released last week showed Lugar trailing.

The race seems to have generated less interest among Indiana's early voters, who applied for ballots in significantly lower numbers than they had in the 2006, 2008 and 2010 primaries.

10 more election stories from beyond the presidential field:

George LeMieux Questions Connie Mack's Ties To Florida In New Web Ad [Tampa Bay Times]

Texas Democrats Send More Than 75 Percent Of Contributions Outside State [Houston Chronicle]

Jon Bruning's Republican Rivals Say They're Not Giving Up [Omaha World-Herald]

Howard Berman Wins Newspaper Endorsement In Heated Democratic Primary [LA Observed]

Hawaii's Inouye Campaigns For Alaska's Mark Begich [Honolulu Civil Beat]

North Carolina Anti-Gay Marriage Amendment Likely To Pass, Polling Shows [The News & Observer]

Late Rep. Tom Lantos' Campaign Funds Go To Reid, Berkley [Las Vegas Review-Journal]

Tim Kaine Makes Campaign Stop At Tech Manufacturer [WVIR]

Temperamental Piglet Remains Senate Campaign Mascot [Wisconsin State Journal]

John Dingell Gets Challenge From The Left By 25-Year-Old Student [AnnArbor.com]

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