2016Final results
2016 election for Arizona's 1st District
U.S. House · Arizona
Tom O’Halleran (D) won with 50.5% of the vote, defeating Paul Babeu (R) by 7.3 points.
Tom O’HalleranDemocrat · winner
50.5%142,219
Paul BabeuRepublican
43.3%121,745
Ray ParrishGreen
5.9%16,746
281,485 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 4:52 AM ET
The seat over time
D − R margin in this seat's races around 2016
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 4:52 AM ET
Money in this race
Each line compares the two campaigns on one scale.
Tom O’HalleranPaul Babeu
$1.6M
Raised by the campaign
$1.3M
$1.6M
Spent by the campaign
$1.3M
$17.3K
Cash on hand
$519
Campaign money: FEC, through Dec 31, 2016.
Source: FEC campaign filingsUpdated Dec 31, 2016