A polling anomaly in the latest numbers from the New York Times and Siena College has Republican strategists predicting more good news to come for the GOP. The NYT and Siena released a survey Monday showing former President Donald Trump leading President Joe Biden across five key swing states: Nevada, Georgia, Arizona, Pennsylvania and Wisconsin. Of registered voters, 33% said they would vote for Biden if the election was held in May with Trump getting 40% of the vote. But while Biden trails Trump by a healthy margin, the down-ballot races are a different story. Senate Democrats are doing much…