Gallup Likely Voters: GOP +13...or maybe +18

Wow.  Now that they're screening by likely voters (instead of just registered voters) the GOP advantage has become monumental.  If there's a big turnout the GOP has a 13% advantage.  In a low turnout election the GOP advantage jumps to 18%.

My guess is this will be a high turnout election for the GOP but a low turnout election for Dems.  I'm not sure how that will affect the numbers but there's likely to be far more people going to polls to vote for Republicans (or vote against Dems) than there will be to support Dems.