Midterm election: Key races that helped decide balance of power in Washington

Turning now to the big win for Democrats in yesterday's midterm elections, delivering a scathing rebuke of President Donald Trump and Republican leadership. Democrats are projected to take control of both the House and the Senate in Washington, picking up wins in reliably red communities across the country. The latest projections from ABC News show Democrats picked up seven Senate seats so far. Giving them a 54 to 44 seat advantage with races in Alaska and Mississippi yet to be called. And in the House, Democrats are on track to win their largest majority since 2008. So far, they hold a 239 to 160 lead with dozens of races still undecided. ABC's Olivia Rubin has a closer look at the key races that helped decide the balance of power in Washington. Today, Democrats preparing to take control in Washington after voters delivered an overwhelming rejection of the Trump presidency and gave them sweeping power in the House and Senate. It wasn't simply a blue wave, it was an American tsunami. Senate Minority Leader Chuck Schumer vowing his party's agenda is focused on the economy. We are going to work hard to drive costs down with the president or with Allen, period. President Trump today, in his first appearance since voters handed him that decisive rebuke, not talking about the economy, voters' number one issue. Instead, he spoke from the new White House ballroom, even as so many Americans said they can't afford gas and groceries. We ordered the marble for the floor. The marble is... A really magnificent one. When he did turn to the election, he said he had no regrets. Now, look, I mean, if I were in the ballot, we would have won. Vice President J.D. Vance blaming the Republican losses on the war with Iran, which set gas prices soaring. The president today agreeing. If I had it to do again, I'd have to do it again, because long term, it's the only answer. You can't let Iran have a nuclear weapon. Democrats say they will investigate, too, but promising that will come second. There has to be some investigations, but we're not going to take our eye off the ball. Some key races for Senate still outstanding. Votes still being counted in Alaska, where Democrat Mary Peltola is up against Republican incumbent Dan Sullivan. And in Mississippi, a state Trump won by a stunning 23 points just two years ago. A razor-thin race there between the Republican incumbent Cindy Hyde-Smith and the Democrat Scott Colum. The bottom line is this is the beginning of a new direction for our state. We are going to win this. Now in terms of working with Democrats, President Trump today saying he'll probably get along with them, but noting he does have veto power if he doesn't, quote, like what they're doing. On Capitol Hill, Olivia Rubin, Channel 6 Action News.