The race for the White House in Georgia is too close to call with 50 percent of likely voters supporting former Vice President Joe Biden and 47 percent supporting President Trump, according to a Quinnipiac (KWIN- uh-pea-ack) University poll of likely voters released today.

Republican incumbent Senator David Perdue, who is seeking a second term, is essentially tied with Democrat Jon Ossoff, as 49 percent of likely voters go to Ossoff and 48 percent go to Perdue. Republicans support Perdue 97 - 2 percent, Democrats support Ossoff 96 - 2 percent, and independents support Ossoff 53 - 43 percent.

In the crowded special election Senate race for the seat held by Republican Kelly Loeffler, who was appointed last December, the top three candidates are Democrat Raphael Warnock with 31 percent, Loeffler at 23 percent, and Republican Doug Collins at 22 percent.

Donald Trump is a very bad debater. Donald Trump is very difficult to debate.

These two seemingly contradictory statements are equally true. He’s a dangerous opponent. In 2016, it was because he had nothing to lose. Now, it’s because he has everything to lose.

I would know. In the last cycle, I had a unique assignment: playing Trump’s stand-in during Hillary Clinton’s mock debates. Before donning the ill-fitting suit I had tailored, my preparation included studying the 11 Republican primary debates in which Trump participated, watching each three times: once start to finish; then only exchanges involving Trump; and finally only Trump, standing at a lectern in my living room with the sound off to focus entirely on his gestures and body language.

Mimicking his appearance, gesticulations and histrionics aside, my overall approach meant zeroing in on the four topics that obsessed Trump: immigration, Obamacare, trade and “the swamp.” When he was on offense, his attacks on (and nicknames for) Clinton were honed and simple by the time the debates began in September. But he rarely, if ever, defended himself. No matter the attack against him — and there were some doozies — he dispensed with them quickly. And in the GOP primary debates, his answers involved three parts: I am great; you are terrible; and a nonsensical digression that often changed the subject entirely.

Four years later, Trump is not different, but the circumstances are. The Trump we see at the first presidential debate in Cleveland on Tuesday may be even harder to debate than last time, because whatever ability he possessed to engage has been subsumed by a constant need to launch into tirades over grievances. (“I sort of prepare every day by just doing what I’m doing,” he told “Fox and Friends” about his pre-debate regimen.) He exists in a double bubble — isolated in the Oval Office, consuming and regurgitating nothing but friendly right-wing media and Twitter bile. And he’s desperate: The debate presents the first big chance to shake up a race he’s losing, but he doesn’t seem to have a plan to turn things around other than to hope for Joe Biden to collapse. After studying Trump in 2016, and our national tutorial every day since, here’s what I think Biden can expect as they face off three times over the next 24 days. (Although it was never really in doubt that Trump would debate, expect grumbling after the first exchange about being treated unfairly and noise about skipping the two others.)