This is ALL THINGS CONSIDERED from NPR News. I'm Melissa Block.
AUDIE CORNISH, HOST:
And I'm Audie Cornish.
The deadly movie theater shooting in Aurora, Colorado has become a key issue in at least two tight congressional races in that battleground state. Since the attacks, two Democratic candidates - running in districts in and around Aurora - have called for stricter gun laws. But Republicans have accused them of trying to politicize the tragedy.
Some well-funded Pro-Mitt Romney conservative groups are pulling their TV ad dollars out of Pennsylvania and Michigan and doubling down on efforts in what they consider to be more crucial swing states; such as Iowa, Nevada and Colorado.