Democrats expected to hold Arizona House seat in special election, further cut into GOP's majority

Democrats are looking to hold the seat for Arizona's 7th Congressional District in a special election on Tuesday.

Former Pima County supervisor Adelita Grijalva (D) and small businessowner Daniel Butierez (R) face off on Tuesday to replace Rep. Raúl Grijalva, the Democratic candidate's father, who died in March due to complications related to his cancer treatment, The Hill news outlet reported.

Grijalva is projected to win the seat and serve for the rest of her father's term after winning her party's primary in July. The late congressman faced off against Butierez last year, winning the seat by nearly 27 points. Then-Vice President Harris won the district in the presidential election last year by 22 points.

Democrats hold a nearly two-to-one advantage in voter registration in the Hispanic-majority district in southern Arizona.

According to a pre-primary campaign filing, Grijalva raised $421,000 between early July and early September, with about $108,000 cash left in the bank. She had started the pre-special election campaign finance period with $128,000.

Over the same time period, Butierez raised $28,000 and had nearly $60,000 left in the bank. He began the pre-special election campaign finance period with about $98,000.

The House of Representatives is currently split 219-213, but Grijalva's expected win would give Democrats 214 seats. If she wins, Grijalva could be sworn in as soon as Wednesday.