<img src="https://www.washingtonpost.com/wp-apps/imrs.php?src=https://d1i4t8bqe7zgj6.cloudfront.net/11-09-2022/t_27f9e28c031e40c08f82b1384e8930e3_name_Screen_Shot_2022_11_09_at_4_27_02_PM.png&w=1024" /><br>Democrats showed surprising strength in key battleground races, but too many contests remained uncalled early Wednesday to project which party will control the House or Senate.