Billions of dollars in advertising are being spent in key battleground states as the two major political parties vie for control of the U.S. Senate. Races in Ohio, Pennsylvania, and Montana alone are projected to see over $1 billion in spending by November 5th.
The Ohio race could set a new spending record for Senate races, while Montana is on track to become the most expensive Senate race ever on a per-vote basis. Democrats are also pouring millions into Texas, aiming to unseat two-term conservative Sen. Ted Cruz.
