The U.S. Senate race is set for a wild finish following a flurry of election-related developments Tuesday.

U.S. Senate candidates Jon Kyl and Jim Pederson increasingly have turned their attention to Iraq during the final weeks before the Nov. 7 election.

The race for Arizona’s contested U.S. Senate seat just took an aggressive turn. Democratic challenger Jim Pederson on Tuesday launched the first in a series of new television commercials that suggests Republican incumbent Jon Kyl rewards special-interest groups that funnel campaign cash to him.

U.S. Senate candidates Jon Kyl and Jim Pederson increasingly have turned their attention to Iraq during the final weeks before the Nov. 7 election.

The race for Arizona’s contested U.S. Senate seat just took an aggressive turn. Democratic challenger Jim Pederson on Tuesday launched the first in a series of new television commercials that suggests Republican incumbent Jon Kyl rewards special-interest groups that funnel campaign cash to him.

As Arizona's U.S. Senate race enters its final days, the two candidates hoping to succeed retiring Sen. Jon Kyl are playing to their strengths: Republican Jeff Flake is calling in presidential hopeful Mitt Romney to help close his argument for victory with the state's conservative-leaning electorate. Democrat Richard Carmona is reaching out to independents and Hispanics, two key voting blocs that could help him pull off an upset.

WASHINGTON — For critical Senate races, Republicans are turning to the playbook that served them so well in the 2010 elections. They're saturating the airwaves with political ads detailing the perils of "Obamacare" and the nation's growing debt.

Arizona's primary election Tuesday features a spirited race for the Republican nomination for U.S. Senate and heated contests for several U.S. House seats, with outcomes that will set the roster of candidates for the Nov. 6 general election.

James Molina says he is withdrawing from the GOP for the District 19 state Senate seat.

Tapping domestic oil and promoting alternative energy resources will help solve the energy crisis, Senate Republican candidate Russell Pearce said at a Clean Elections Debate Wednesday night. 

A veteran legislator outspoken about illegal immigration versus an immigration lawyer. The District 18 Senate race in Mesa could not be scripted any better. Both Rep. Russell Pearce, R-Mesa, and political rookie Kevin Gibbons say they know the highly divisive immigration issue better than the other.

A third challenger has entered the race for the state Senate in Gilbert - a candidate who says he will be more fiscally conservative than the other two legislators vying for the District 22 seat.

Republican Jon Kyl and Democrat Jim Pederson are making a final dash in their high-stakes U.S. Senate race, a contest that both men believe is winnable.

Republican Jon Kyl and Democrat Jim Pederson are making a final dash in their high-stakes U.S. Senate race, a contest that both men believe is winnable.

Republican Jon Kyl and Democrat Jim Pederson are making a final dash in their high-stakes U.S. Senate race, a contest that both men believe is winnable.

If one listens to the rhetoric, it seems impossible that the state Senate race between incumbent Carolyn Allen and Rep. Colette Rosati is actually between two Republicans. Allen said Rosati is out of touch with the mainstream public and has been ineffective in the House of Representatives.

The top candidates for Arizona’s contested Senate seat increasingly are taking their messages to the airwaves.

If one listens to the rhetoric, it seems impossible that the state Senate race between incumbent Carolyn Allen and Rep. Colette Rosati is actually between two Republicans.

The top candidates for Arizona’s contested Senate seat increasingly are taking their messages to the airwaves. Just a day after Republican incumbent Jon Kyl rolled out a new television commercial, Democratic challenger Jim Pederson followed with two new commercials.