3 big questions as GOP nears moment of truth

With midterms 39 days away, Republicans focus on three questions, including whether attack ads work. GOP groups spent over $450 million through Sept. 23, more than double Democrats' spending, per Rob Pyers. Trump's operation delayed ads until Labor Day. The Texas Senate race is watched closely, with over $100 million spent helping Ken Paxton, who trails James Talarico in polls.